/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:59:28,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:59:28,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:59:28,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:59:28,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:59:28,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:59:28,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:59:28,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:59:28,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:59:28,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:59:28,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:59:28,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:59:28,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:59:28,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:59:28,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:59:28,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:59:28,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:59:28,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:59:28,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:59:28,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:59:28,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:59:28,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:59:28,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:59:28,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:59:28,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:59:28,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:59:28,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:59:28,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:59:28,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:59:28,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:59:28,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:59:28,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:59:28,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:59:28,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:59:28,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:59:28,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:59:28,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:59:28,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:59:28,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:59:28,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:59:28,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:59:28,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:59:28,731 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:59:28,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:59:28,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:59:28,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:59:28,733 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:59:28,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:59:28,734 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:59:28,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:59:28,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:59:28,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:59:28,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:59:28,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:59:28,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:59:28,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:59:28,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:59:28,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:59:28,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:59:28,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:59:28,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:59:28,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:59:28,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:59:28,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:59:28,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:59:28,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:59:28,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:59:28,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:59:28,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:59:28,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:59:28,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:59:28,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:59:29,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:59:29,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:59:29,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:59:29,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:59:29,153 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:59:29,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:59:29,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35253fbbd/c66983faf80c4b63bfbf528258dd77dc/FLAG034280110 [2020-10-29 13:59:30,000 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:59:30,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:59:30,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35253fbbd/c66983faf80c4b63bfbf528258dd77dc/FLAG034280110 [2020-10-29 13:59:30,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35253fbbd/c66983faf80c4b63bfbf528258dd77dc [2020-10-29 13:59:30,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:59:30,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:59:30,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:59:30,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:59:30,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:59:30,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:59:30" (1/1) ... [2020-10-29 13:59:30,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ecab492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:30, skipping insertion in model container [2020-10-29 13:59:30,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:59:30" (1/1) ... [2020-10-29 13:59:30,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:59:30,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:59:30,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:59:30,904 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:59:31,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:59:31,245 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:59:31,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:31 WrapperNode [2020-10-29 13:59:31,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:59:31,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:59:31,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:59:31,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:59:31,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:31" (1/1) ... [2020-10-29 13:59:31,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:31" (1/1) ... [2020-10-29 13:59:31,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:31" (1/1) ... [2020-10-29 13:59:31,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:31" (1/1) ... [2020-10-29 13:59:31,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:31" (1/1) ... [2020-10-29 13:59:31,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:31" (1/1) ... [2020-10-29 13:59:31,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:31" (1/1) ... [2020-10-29 13:59:31,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:59:31,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:59:31,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:59:31,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:59:31,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:59:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:59:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:59:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:59:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:59:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:59:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:59:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:59:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:59:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:59:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:59:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:59:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:59:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:59:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:59:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:59:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:59:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:59:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:59:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:59:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:59:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:59:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:59:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:59:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:59:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:59:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:59:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:59:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:59:33,487 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:59:33,487 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:59:33,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:59:33 BoogieIcfgContainer [2020-10-29 13:59:33,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:59:33,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:59:33,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:59:33,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:59:33,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:59:30" (1/3) ... [2020-10-29 13:59:33,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c4eb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:59:33, skipping insertion in model container [2020-10-29 13:59:33,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:31" (2/3) ... [2020-10-29 13:59:33,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c4eb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:59:33, skipping insertion in model container [2020-10-29 13:59:33,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:59:33" (3/3) ... [2020-10-29 13:59:33,499 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:59:33,511 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:59:33,517 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:59:33,530 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:59:33,560 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:59:33,560 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:59:33,560 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:59:33,560 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:59:33,561 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:59:33,561 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:59:33,561 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:59:33,561 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:59:33,588 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states. [2020-10-29 13:59:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 13:59:33,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:33,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:33,609 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash -406253737, now seen corresponding path program 1 times [2020-10-29 13:59:33,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:33,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124568120] [2020-10-29 13:59:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:34,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:34,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:35,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:35,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:36,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:37,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:37,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:39,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:39,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 13:59:39,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:59:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 13:59:39,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:39,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:39,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 13:59:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 13:59:39,978 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:59:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:40,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:40,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:40,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:40,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 13:59:40,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:40,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:40,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:40,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124568120] [2020-10-29 13:59:40,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:40,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:40,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355548931] [2020-10-29 13:59:40,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:40,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:40,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:40,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:40,217 INFO L87 Difference]: Start difference. First operand 433 states. Second operand 5 states. [2020-10-29 13:59:44,061 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:59:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:45,625 INFO L93 Difference]: Finished difference Result 1242 states and 2222 transitions. [2020-10-29 13:59:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:59:45,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-29 13:59:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:45,660 INFO L225 Difference]: With dead ends: 1242 [2020-10-29 13:59:45,660 INFO L226 Difference]: Without dead ends: 812 [2020-10-29 13:59:45,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-29 13:59:45,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 792. [2020-10-29 13:59:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-10-29 13:59:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1135 transitions. [2020-10-29 13:59:45,805 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1135 transitions. Word has length 155 [2020-10-29 13:59:45,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:45,806 INFO L481 AbstractCegarLoop]: Abstraction has 792 states and 1135 transitions. [2020-10-29 13:59:45,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1135 transitions. [2020-10-29 13:59:45,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 13:59:45,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:45,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:45,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:59:45,814 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:45,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:45,815 INFO L82 PathProgramCache]: Analyzing trace with hash -968079915, now seen corresponding path program 1 times [2020-10-29 13:59:45,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:45,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988610031] [2020-10-29 13:59:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:46,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:46,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:46,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:47,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:47,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:50,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:50,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 13:59:50,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:59:50,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 13:59:50,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:50,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:50,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:50,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:50,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 13:59:50,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:51,433 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:59:51,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:51,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:51,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:51,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:51,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:51,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 13:59:51,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:51,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:51,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:51,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988610031] [2020-10-29 13:59:51,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:51,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:51,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559401809] [2020-10-29 13:59:51,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:51,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:51,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:51,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:51,558 INFO L87 Difference]: Start difference. First operand 792 states and 1135 transitions. Second operand 5 states. [2020-10-29 13:59:54,699 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:59:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:56,207 INFO L93 Difference]: Finished difference Result 2284 states and 3259 transitions. [2020-10-29 13:59:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:56,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-29 13:59:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:56,225 INFO L225 Difference]: With dead ends: 2284 [2020-10-29 13:59:56,226 INFO L226 Difference]: Without dead ends: 1523 [2020-10-29 13:59:56,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:56,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2020-10-29 13:59:56,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1496. [2020-10-29 13:59:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-10-29 13:59:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2125 transitions. [2020-10-29 13:59:56,322 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2125 transitions. Word has length 156 [2020-10-29 13:59:56,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:56,322 INFO L481 AbstractCegarLoop]: Abstraction has 1496 states and 2125 transitions. [2020-10-29 13:59:56,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:56,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2125 transitions. [2020-10-29 13:59:56,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 13:59:56,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:56,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:56,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:59:56,329 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:56,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:56,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1143639414, now seen corresponding path program 1 times [2020-10-29 13:59:56,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:56,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554678524] [2020-10-29 13:59:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:56,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:56,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:56,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:56,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:01,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:01,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 14:00:01,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:00:01,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 14:00:01,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:01,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:01,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:01,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:01,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 14:00:01,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:01,968 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:00:01,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:01,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:01,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:01,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:01,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:01,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:00:01,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:01,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:02,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554678524] [2020-10-29 14:00:02,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:02,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:02,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530860001] [2020-10-29 14:00:02,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:02,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:02,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:02,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:02,074 INFO L87 Difference]: Start difference. First operand 1496 states and 2125 transitions. Second operand 5 states. [2020-10-29 14:00:05,282 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:00:06,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:06,946 INFO L93 Difference]: Finished difference Result 4025 states and 5720 transitions. [2020-10-29 14:00:06,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:06,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-29 14:00:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:06,967 INFO L225 Difference]: With dead ends: 4025 [2020-10-29 14:00:06,970 INFO L226 Difference]: Without dead ends: 2882 [2020-10-29 14:00:06,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-10-29 14:00:07,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2855. [2020-10-29 14:00:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2855 states. [2020-10-29 14:00:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 4010 transitions. [2020-10-29 14:00:07,136 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 4010 transitions. Word has length 157 [2020-10-29 14:00:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:07,137 INFO L481 AbstractCegarLoop]: Abstraction has 2855 states and 4010 transitions. [2020-10-29 14:00:07,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 4010 transitions. [2020-10-29 14:00:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 14:00:07,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:07,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:07,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:00:07,145 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:07,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:07,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1881140114, now seen corresponding path program 1 times [2020-10-29 14:00:07,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:07,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896308766] [2020-10-29 14:00:07,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:07,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:09,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:11,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:11,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:11,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:12,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:12,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 14:00:12,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:00:12,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 14:00:12,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:12,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:12,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 14:00:12,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:12,886 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:00:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:12,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:12,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:12,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:12,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:12,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:00:12,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:12,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:12,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:00:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:13,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896308766] [2020-10-29 14:00:13,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:13,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:13,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448142192] [2020-10-29 14:00:13,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:13,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:13,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:13,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:13,021 INFO L87 Difference]: Start difference. First operand 2855 states and 4010 transitions. Second operand 5 states. [2020-10-29 14:00:16,474 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:00:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:18,224 INFO L93 Difference]: Finished difference Result 7820 states and 10998 transitions. [2020-10-29 14:00:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:18,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-29 14:00:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:18,252 INFO L225 Difference]: With dead ends: 7820 [2020-10-29 14:00:18,252 INFO L226 Difference]: Without dead ends: 5517 [2020-10-29 14:00:18,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:18,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2020-10-29 14:00:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5499. [2020-10-29 14:00:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5499 states. [2020-10-29 14:00:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 7616 transitions. [2020-10-29 14:00:18,602 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 7616 transitions. Word has length 158 [2020-10-29 14:00:18,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:18,602 INFO L481 AbstractCegarLoop]: Abstraction has 5499 states and 7616 transitions. [2020-10-29 14:00:18,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:18,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 7616 transitions. [2020-10-29 14:00:18,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 14:00:18,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:18,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:18,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:00:18,613 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:18,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:18,614 INFO L82 PathProgramCache]: Analyzing trace with hash -714413900, now seen corresponding path program 1 times [2020-10-29 14:00:18,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:18,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655587299] [2020-10-29 14:00:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:18,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:18,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:18,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:19,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:20,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:23,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:23,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 14:00:23,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:00:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 14:00:23,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:23,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 14:00:23,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:24,387 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:00:24,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:24,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:24,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:00:24,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:24,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:24,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 14:00:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:24,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655587299] [2020-10-29 14:00:24,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:24,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:24,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174371410] [2020-10-29 14:00:24,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:24,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:24,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:24,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:24,506 INFO L87 Difference]: Start difference. First operand 5499 states and 7616 transitions. Second operand 5 states. [2020-10-29 14:00:28,211 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:00:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:29,952 INFO L93 Difference]: Finished difference Result 15970 states and 21979 transitions. [2020-10-29 14:00:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:29,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-29 14:00:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:30,007 INFO L225 Difference]: With dead ends: 15970 [2020-10-29 14:00:30,008 INFO L226 Difference]: Without dead ends: 10647 [2020-10-29 14:00:30,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:30,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10647 states. [2020-10-29 14:00:30,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10647 to 10612. [2020-10-29 14:00:30,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10612 states. [2020-10-29 14:00:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10612 states to 10612 states and 14481 transitions. [2020-10-29 14:00:30,737 INFO L78 Accepts]: Start accepts. Automaton has 10612 states and 14481 transitions. Word has length 159 [2020-10-29 14:00:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:30,737 INFO L481 AbstractCegarLoop]: Abstraction has 10612 states and 14481 transitions. [2020-10-29 14:00:30,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:30,738 INFO L276 IsEmpty]: Start isEmpty. Operand 10612 states and 14481 transitions. [2020-10-29 14:00:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 14:00:30,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:30,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:30,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:00:30,757 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:30,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:30,758 INFO L82 PathProgramCache]: Analyzing trace with hash 976680211, now seen corresponding path program 1 times [2020-10-29 14:00:30,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:30,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329054830] [2020-10-29 14:00:30,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:30,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:30,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:30,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:30,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:31,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:34,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:34,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:35,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:35,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 14:00:35,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:00:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:00:35,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:35,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 14:00:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:36,350 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:00:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:36,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:36,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:36,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:36,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:36,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:00:36,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:36,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:36,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329054830] [2020-10-29 14:00:36,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:36,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:36,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378795920] [2020-10-29 14:00:36,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:36,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:36,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:36,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:36,544 INFO L87 Difference]: Start difference. First operand 10612 states and 14481 transitions. Second operand 5 states. [2020-10-29 14:00:40,273 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:00:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:42,166 INFO L93 Difference]: Finished difference Result 28866 states and 39427 transitions. [2020-10-29 14:00:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:42,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-29 14:00:42,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:42,224 INFO L225 Difference]: With dead ends: 28866 [2020-10-29 14:00:42,224 INFO L226 Difference]: Without dead ends: 20479 [2020-10-29 14:00:42,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20479 states. [2020-10-29 14:00:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20479 to 20444. [2020-10-29 14:00:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20444 states. [2020-10-29 14:00:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20444 states to 20444 states and 27505 transitions. [2020-10-29 14:00:43,381 INFO L78 Accepts]: Start accepts. Automaton has 20444 states and 27505 transitions. Word has length 160 [2020-10-29 14:00:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:43,381 INFO L481 AbstractCegarLoop]: Abstraction has 20444 states and 27505 transitions. [2020-10-29 14:00:43,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 20444 states and 27505 transitions. [2020-10-29 14:00:43,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 14:00:43,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:43,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:43,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:00:43,416 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:43,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:43,417 INFO L82 PathProgramCache]: Analyzing trace with hash 626013524, now seen corresponding path program 1 times [2020-10-29 14:00:43,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:43,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282690251] [2020-10-29 14:00:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:43,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:48,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:48,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 14:00:48,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:00:48,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 14:00:48,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:48,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 14:00:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 14:00:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:48,982 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:00:48,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:48,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:49,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:49,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:49,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:49,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:00:49,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:49,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:49,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282690251] [2020-10-29 14:00:49,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:49,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:49,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695790101] [2020-10-29 14:00:49,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:49,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:49,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:49,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:49,062 INFO L87 Difference]: Start difference. First operand 20444 states and 27505 transitions. Second operand 5 states. [2020-10-29 14:00:52,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:52,102 INFO L93 Difference]: Finished difference Result 32863 states and 44334 transitions. [2020-10-29 14:00:52,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:52,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-29 14:00:52,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:52,132 INFO L225 Difference]: With dead ends: 32863 [2020-10-29 14:00:52,133 INFO L226 Difference]: Without dead ends: 13216 [2020-10-29 14:00:52,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13216 states. [2020-10-29 14:00:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13216 to 13215. [2020-10-29 14:00:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13215 states. [2020-10-29 14:00:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13215 states to 13215 states and 17761 transitions. [2020-10-29 14:00:53,007 INFO L78 Accepts]: Start accepts. Automaton has 13215 states and 17761 transitions. Word has length 161 [2020-10-29 14:00:53,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:53,007 INFO L481 AbstractCegarLoop]: Abstraction has 13215 states and 17761 transitions. [2020-10-29 14:00:53,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 13215 states and 17761 transitions. [2020-10-29 14:00:53,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 14:00:53,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:53,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:53,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:00:53,024 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:53,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:53,024 INFO L82 PathProgramCache]: Analyzing trace with hash 415049541, now seen corresponding path program 1 times [2020-10-29 14:00:53,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:53,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631883963] [2020-10-29 14:00:53,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:53,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:53,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:53,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:53,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:58,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:58,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 14:00:58,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:00:58,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:58,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:58,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:00:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:00:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 14:00:58,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:58,636 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:00:58,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:58,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:58,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:58,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:58,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 14:00:58,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:58,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:00:58,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:58,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631883963] [2020-10-29 14:00:58,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:58,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:00:58,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037223775] [2020-10-29 14:00:58,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:00:58,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:58,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:00:58,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:00:58,773 INFO L87 Difference]: Start difference. First operand 13215 states and 17761 transitions. Second operand 9 states. [2020-10-29 14:00:59,333 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:01:02,778 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:01:03,335 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:01:05,426 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:01:05,942 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-29 14:01:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:06,702 INFO L93 Difference]: Finished difference Result 44854 states and 62510 transitions. [2020-10-29 14:01:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:01:06,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2020-10-29 14:01:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:06,778 INFO L225 Difference]: With dead ends: 44854 [2020-10-29 14:01:06,779 INFO L226 Difference]: Without dead ends: 34245 [2020-10-29 14:01:06,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:01:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34245 states. [2020-10-29 14:01:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34245 to 21223. [2020-10-29 14:01:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21223 states. [2020-10-29 14:01:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21223 states to 21223 states and 28689 transitions. [2020-10-29 14:01:08,615 INFO L78 Accepts]: Start accepts. Automaton has 21223 states and 28689 transitions. Word has length 164 [2020-10-29 14:01:08,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:08,616 INFO L481 AbstractCegarLoop]: Abstraction has 21223 states and 28689 transitions. [2020-10-29 14:01:08,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:01:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 21223 states and 28689 transitions. [2020-10-29 14:01:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 14:01:08,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:08,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:08,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:01:08,638 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:08,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:08,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1794807060, now seen corresponding path program 1 times [2020-10-29 14:01:08,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:08,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501387372] [2020-10-29 14:01:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:13,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:13,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 14:01:13,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:01:13,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 14:01:13,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:13,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 14:01:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 14:01:13,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:14,240 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:01:14,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:14,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:14,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:14,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:14,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:14,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:01:14,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:14,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:14,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:14,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:14,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:14,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:01:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:14,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501387372] [2020-10-29 14:01:14,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:14,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:14,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294339625] [2020-10-29 14:01:14,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:14,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:14,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:14,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:14,314 INFO L87 Difference]: Start difference. First operand 21223 states and 28689 transitions. Second operand 5 states. [2020-10-29 14:01:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:17,571 INFO L93 Difference]: Finished difference Result 37657 states and 50972 transitions. [2020-10-29 14:01:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:01:17,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-29 14:01:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:17,596 INFO L225 Difference]: With dead ends: 37657 [2020-10-29 14:01:17,596 INFO L226 Difference]: Without dead ends: 16975 [2020-10-29 14:01:17,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16975 states. [2020-10-29 14:01:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16975 to 16967. [2020-10-29 14:01:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16967 states. [2020-10-29 14:01:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16967 states to 16967 states and 22914 transitions. [2020-10-29 14:01:18,839 INFO L78 Accepts]: Start accepts. Automaton has 16967 states and 22914 transitions. Word has length 164 [2020-10-29 14:01:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:18,839 INFO L481 AbstractCegarLoop]: Abstraction has 16967 states and 22914 transitions. [2020-10-29 14:01:18,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 16967 states and 22914 transitions. [2020-10-29 14:01:18,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-29 14:01:18,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:18,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:18,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:01:18,852 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:18,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1455884933, now seen corresponding path program 1 times [2020-10-29 14:01:18,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:18,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113631658] [2020-10-29 14:01:18,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:18,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:18,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:19,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:23,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:23,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 14:01:23,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:01:23,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 14:01:23,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:23,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:01:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:01:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 14:01:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:24,425 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:01:24,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:24,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:24,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:24,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:24,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 14:01:24,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:24,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:01:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:01:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:24,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113631658] [2020-10-29 14:01:24,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:24,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:01:24,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037574257] [2020-10-29 14:01:24,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:01:24,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:24,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:01:24,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:01:24,518 INFO L87 Difference]: Start difference. First operand 16967 states and 22914 transitions. Second operand 9 states. [2020-10-29 14:01:25,063 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:01:28,722 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:01:29,309 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:01:31,503 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:01:32,150 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-29 14:01:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:33,630 INFO L93 Difference]: Finished difference Result 54415 states and 74992 transitions. [2020-10-29 14:01:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:01:33,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-10-29 14:01:33,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:33,691 INFO L225 Difference]: With dead ends: 54415 [2020-10-29 14:01:33,692 INFO L226 Difference]: Without dead ends: 43736 [2020-10-29 14:01:33,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:01:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43736 states. [2020-10-29 14:01:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43736 to 26384. [2020-10-29 14:01:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26384 states. [2020-10-29 14:01:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 35621 transitions. [2020-10-29 14:01:35,966 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 35621 transitions. Word has length 167 [2020-10-29 14:01:35,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:35,966 INFO L481 AbstractCegarLoop]: Abstraction has 26384 states and 35621 transitions. [2020-10-29 14:01:35,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:01:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 35621 transitions. [2020-10-29 14:01:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-29 14:01:35,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:35,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:35,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:01:35,984 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:35,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:35,984 INFO L82 PathProgramCache]: Analyzing trace with hash -30148194, now seen corresponding path program 1 times [2020-10-29 14:01:35,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:35,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801509852] [2020-10-29 14:01:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:36,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:37,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:38,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:38,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:41,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:41,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 14:01:41,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:01:41,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 14:01:41,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:41,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:41,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:41,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:01:41,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 14:01:41,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:41,575 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:01:41,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:41,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:41,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:41,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:41,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:41,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:01:41,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:41,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:41,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801509852] [2020-10-29 14:01:41,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:41,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:41,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89742005] [2020-10-29 14:01:41,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:41,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:41,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:41,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:41,632 INFO L87 Difference]: Start difference. First operand 26384 states and 35621 transitions. Second operand 5 states. [2020-10-29 14:01:42,161 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 14:01:48,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:48,585 INFO L93 Difference]: Finished difference Result 47948 states and 64722 transitions. [2020-10-29 14:01:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:01:48,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-29 14:01:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:48,612 INFO L225 Difference]: With dead ends: 47948 [2020-10-29 14:01:48,612 INFO L226 Difference]: Without dead ends: 26379 [2020-10-29 14:01:48,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:48,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26379 states. [2020-10-29 14:01:50,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26379 to 26361. [2020-10-29 14:01:50,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26361 states. [2020-10-29 14:01:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26361 states to 26361 states and 35466 transitions. [2020-10-29 14:01:50,846 INFO L78 Accepts]: Start accepts. Automaton has 26361 states and 35466 transitions. Word has length 167 [2020-10-29 14:01:50,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:50,846 INFO L481 AbstractCegarLoop]: Abstraction has 26361 states and 35466 transitions. [2020-10-29 14:01:50,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:50,846 INFO L276 IsEmpty]: Start isEmpty. Operand 26361 states and 35466 transitions. [2020-10-29 14:01:50,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 14:01:50,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:50,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:50,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:01:50,861 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:50,861 INFO L82 PathProgramCache]: Analyzing trace with hash 850026879, now seen corresponding path program 1 times [2020-10-29 14:01:50,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:50,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247630868] [2020-10-29 14:01:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:50,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:50,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:50,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:51,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:51,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:51,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:55,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:55,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 14:01:55,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:01:55,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 14:01:55,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:55,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:55,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:55,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:01:55,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 14:01:55,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:56,439 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:01:56,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:56,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:56,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:56,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:56,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:01:56,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:56,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:56,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:56,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247630868] [2020-10-29 14:01:56,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:56,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:56,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499969896] [2020-10-29 14:01:56,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:56,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:56,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:56,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:56,497 INFO L87 Difference]: Start difference. First operand 26361 states and 35466 transitions. Second operand 5 states. [2020-10-29 14:01:56,993 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 14:02:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:03,628 INFO L93 Difference]: Finished difference Result 48209 states and 64921 transitions. [2020-10-29 14:02:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:02:03,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-29 14:02:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:03,655 INFO L225 Difference]: With dead ends: 48209 [2020-10-29 14:02:03,655 INFO L226 Difference]: Without dead ends: 26383 [2020-10-29 14:02:03,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:02:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26383 states. [2020-10-29 14:02:05,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26383 to 26361. [2020-10-29 14:02:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26361 states. [2020-10-29 14:02:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26361 states to 26361 states and 35335 transitions. [2020-10-29 14:02:06,019 INFO L78 Accepts]: Start accepts. Automaton has 26361 states and 35335 transitions. Word has length 168 [2020-10-29 14:02:06,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:06,019 INFO L481 AbstractCegarLoop]: Abstraction has 26361 states and 35335 transitions. [2020-10-29 14:02:06,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:06,020 INFO L276 IsEmpty]: Start isEmpty. Operand 26361 states and 35335 transitions. [2020-10-29 14:02:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 14:02:06,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:06,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:06,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:02:06,035 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:06,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:06,036 INFO L82 PathProgramCache]: Analyzing trace with hash 973681124, now seen corresponding path program 1 times [2020-10-29 14:02:06,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:06,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713465416] [2020-10-29 14:02:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:02:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 14:02:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:11,583 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:02:11,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:11,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:11,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:11,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:11,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:02:11,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:11,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:11,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:11,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713465416] [2020-10-29 14:02:11,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:11,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:11,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199531666] [2020-10-29 14:02:11,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:11,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:11,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:11,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:11,652 INFO L87 Difference]: Start difference. First operand 26361 states and 35335 transitions. Second operand 5 states. [2020-10-29 14:02:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:15,733 INFO L93 Difference]: Finished difference Result 47238 states and 63329 transitions. [2020-10-29 14:02:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:02:15,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-29 14:02:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:15,765 INFO L225 Difference]: With dead ends: 47238 [2020-10-29 14:02:15,766 INFO L226 Difference]: Without dead ends: 21290 [2020-10-29 14:02:15,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:02:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21290 states. [2020-10-29 14:02:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21290 to 21290. [2020-10-29 14:02:17,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21290 states. [2020-10-29 14:02:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21290 states to 21290 states and 28482 transitions. [2020-10-29 14:02:17,729 INFO L78 Accepts]: Start accepts. Automaton has 21290 states and 28482 transitions. Word has length 169 [2020-10-29 14:02:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:17,729 INFO L481 AbstractCegarLoop]: Abstraction has 21290 states and 28482 transitions. [2020-10-29 14:02:17,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21290 states and 28482 transitions. [2020-10-29 14:02:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 14:02:17,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:17,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:17,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:02:17,744 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:17,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:17,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1975571158, now seen corresponding path program 1 times [2020-10-29 14:02:17,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:17,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259535245] [2020-10-29 14:02:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:17,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:17,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:20,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:21,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:21,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:22,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:22,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 14:02:22,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:02:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 14:02:22,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:22,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 14:02:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 14:02:22,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:23,307 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:02:23,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:23,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:23,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:23,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:23,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:02:23,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:23,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:23,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259535245] [2020-10-29 14:02:23,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:23,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:23,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007703375] [2020-10-29 14:02:23,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:23,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:23,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:23,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:23,354 INFO L87 Difference]: Start difference. First operand 21290 states and 28482 transitions. Second operand 5 states. [2020-10-29 14:02:23,851 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 14:02:27,312 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 14:02:30,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:30,782 INFO L93 Difference]: Finished difference Result 46193 states and 63951 transitions. [2020-10-29 14:02:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:02:30,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-29 14:02:30,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:30,818 INFO L225 Difference]: With dead ends: 46193 [2020-10-29 14:02:30,819 INFO L226 Difference]: Without dead ends: 34923 [2020-10-29 14:02:30,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:02:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34923 states. [2020-10-29 14:02:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34923 to 34920. [2020-10-29 14:02:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34920 states. [2020-10-29 14:02:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34920 states to 34920 states and 47450 transitions. [2020-10-29 14:02:34,299 INFO L78 Accepts]: Start accepts. Automaton has 34920 states and 47450 transitions. Word has length 169 [2020-10-29 14:02:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:34,300 INFO L481 AbstractCegarLoop]: Abstraction has 34920 states and 47450 transitions. [2020-10-29 14:02:34,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 34920 states and 47450 transitions. [2020-10-29 14:02:34,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 14:02:34,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:34,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:34,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:02:34,321 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:34,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:34,321 INFO L82 PathProgramCache]: Analyzing trace with hash -2128435042, now seen corresponding path program 1 times [2020-10-29 14:02:34,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:34,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154979073] [2020-10-29 14:02:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:34,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:36,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:39,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:39,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 14:02:39,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:02:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:02:39,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:39,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:02:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:02:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-29 14:02:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:39,915 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 14:02:39,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:39,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:39,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:39,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:39,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:39,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:02:39,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:39,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:02:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:02:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:40,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154979073] [2020-10-29 14:02:40,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:40,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:02:40,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124723773] [2020-10-29 14:02:40,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:02:40,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:40,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:02:40,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:02:40,002 INFO L87 Difference]: Start difference. First operand 34920 states and 47450 transitions. Second operand 9 states. [2020-10-29 14:02:40,652 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 14:02:45,193 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 14:02:45,764 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:02:48,696 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 14:02:49,326 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-29 14:02:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:58,404 INFO L93 Difference]: Finished difference Result 136486 states and 189528 transitions. [2020-10-29 14:02:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:02:58,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-10-29 14:02:58,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:58,557 INFO L225 Difference]: With dead ends: 136486 [2020-10-29 14:02:58,557 INFO L226 Difference]: Without dead ends: 103571 [2020-10-29 14:02:58,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-29 14:02:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103571 states. [2020-10-29 14:03:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103571 to 47028. [2020-10-29 14:03:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47028 states. [2020-10-29 14:03:04,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47028 states to 47028 states and 63442 transitions. [2020-10-29 14:03:04,617 INFO L78 Accepts]: Start accepts. Automaton has 47028 states and 63442 transitions. Word has length 169 [2020-10-29 14:03:04,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:04,617 INFO L481 AbstractCegarLoop]: Abstraction has 47028 states and 63442 transitions. [2020-10-29 14:03:04,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:03:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 47028 states and 63442 transitions. [2020-10-29 14:03:04,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 14:03:04,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:04,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:04,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:03:04,634 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:04,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:04,634 INFO L82 PathProgramCache]: Analyzing trace with hash -74897371, now seen corresponding path program 1 times [2020-10-29 14:03:04,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:04,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35676333] [2020-10-29 14:03:04,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:04,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:04,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking...