/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_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:25:42,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:25:42,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:25:42,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:25:42,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:25:42,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:25:42,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:25:42,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:25:42,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:25:42,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:25:42,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:25:42,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:25:42,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:25:42,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:25:42,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:25:42,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:25:42,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:25:42,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:25:42,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:25:42,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:25:42,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:25:42,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:25:42,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:25:42,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:25:42,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:25:42,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:25:42,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:25:42,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:25:42,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:25:42,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:25:42,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:25:42,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:25:42,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:25:42,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:25:42,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:25:42,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:25:42,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:25:42,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:25:42,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:25:42,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:25:42,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:25:42,747 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 13:25:42,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:25:42,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:25:42,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:25:42,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:25:42,778 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:25:42,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:25:42,778 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:25:42,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:25:42,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:25:42,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:25:42,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:25:42,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:25:42,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:25:42,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:25:42,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:25:42,780 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:25:42,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:25:42,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:25:42,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:25:42,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:25:42,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:25:42,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:25:42,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:25:42,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:25:42,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:25:42,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:25:42,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:25:42,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:25:42,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:25:42,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:25:43,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:25:43,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:25:43,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:25:43,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:25:43,222 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:25:43,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-29 13:25:43,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01dd94f7b/7acd6fee180b4d1f9ec2e571046f644d/FLAG4a7b5566f [2020-10-29 13:25:44,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:25:44,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-29 13:25:44,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01dd94f7b/7acd6fee180b4d1f9ec2e571046f644d/FLAG4a7b5566f [2020-10-29 13:25:44,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01dd94f7b/7acd6fee180b4d1f9ec2e571046f644d [2020-10-29 13:25:44,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:25:44,310 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:25:44,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:25:44,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:25:44,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:25:44,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:25:44" (1/1) ... [2020-10-29 13:25:44,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484f13da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:44, skipping insertion in model container [2020-10-29 13:25:44,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:25:44" (1/1) ... [2020-10-29 13:25:44,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:25:44,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:25:44,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:25:44,804 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:25:44,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:25:44,998 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:25:44,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:44 WrapperNode [2020-10-29 13:25:45,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:25:45,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:25:45,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:25:45,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:25:45,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:44" (1/1) ... [2020-10-29 13:25:45,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:44" (1/1) ... [2020-10-29 13:25:45,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:44" (1/1) ... [2020-10-29 13:25:45,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:44" (1/1) ... [2020-10-29 13:25:45,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:44" (1/1) ... [2020-10-29 13:25:45,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:44" (1/1) ... [2020-10-29 13:25:45,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:44" (1/1) ... [2020-10-29 13:25:45,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:25:45,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:25:45,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:25:45,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:25:45,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:25:45,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:25:45,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:25:45,194 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:25:45,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:25:45,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:25:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:25:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:25:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:25:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:25:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:25:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:25:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:25:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:25:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:25:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:25:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:25:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:25:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:25:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:25:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:25:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:25:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:25:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:25:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:25:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:25:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:25:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:25:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:25:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:25:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:25:46,185 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:25:46,186 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:25:46,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:25:46 BoogieIcfgContainer [2020-10-29 13:25:46,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:25:46,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:25:46,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:25:46,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:25:46,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:25:44" (1/3) ... [2020-10-29 13:25:46,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2720463c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:25:46, skipping insertion in model container [2020-10-29 13:25:46,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:44" (2/3) ... [2020-10-29 13:25:46,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2720463c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:25:46, skipping insertion in model container [2020-10-29 13:25:46,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:25:46" (3/3) ... [2020-10-29 13:25:46,198 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-29 13:25:46,213 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:25:46,220 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:25:46,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:25:46,266 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:25:46,267 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:25:46,267 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:25:46,267 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:25:46,267 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:25:46,267 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:25:46,268 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:25:46,268 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:25:46,291 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-10-29 13:25:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 13:25:46,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:46,304 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] [2020-10-29 13:25:46,304 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:46,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:46,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2070299591, now seen corresponding path program 1 times [2020-10-29 13:25:46,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:46,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665903390] [2020-10-29 13:25:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:46,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:47,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:47,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:47,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:47,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:48,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:51,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:51,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 13:25:51,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:25:51,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 13:25:51,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:51,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:25:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:25:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:25:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:25:52,220 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:25:52,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:25:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:52,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:52,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:52,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:25:52,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:25:52,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 13:25:52,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:52,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:52,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:25:52,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:25:52,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:25:52,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:25:52,359 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 13:25:52,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665903390] [2020-10-29 13:25:52,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:25:52,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:25:52,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359878322] [2020-10-29 13:25:52,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:25:52,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:25:52,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:25:52,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:25:52,395 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 6 states. [2020-10-29 13:25:52,828 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:25:53,986 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:25:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:25:54,435 INFO L93 Difference]: Finished difference Result 416 states and 690 transitions. [2020-10-29 13:25:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:25:54,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-29 13:25:54,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:25:54,449 INFO L225 Difference]: With dead ends: 416 [2020-10-29 13:25:54,450 INFO L226 Difference]: Without dead ends: 272 [2020-10-29 13:25:54,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:25:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-29 13:25:54,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 269. [2020-10-29 13:25:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-29 13:25:54,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 385 transitions. [2020-10-29 13:25:54,529 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 385 transitions. Word has length 96 [2020-10-29 13:25:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:25:54,530 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 385 transitions. [2020-10-29 13:25:54,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:25:54,530 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 385 transitions. [2020-10-29 13:25:54,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 13:25:54,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:54,534 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] [2020-10-29 13:25:54,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:25:54,535 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:54,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:54,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1564295992, now seen corresponding path program 1 times [2020-10-29 13:25:54,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:54,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233096885] [2020-10-29 13:25:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:54,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:54,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:54,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:55,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:55,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:59,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:59,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 13:25:59,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:25:59,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:25:59,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:59,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:59,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:25:59,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:25:59,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 13:25:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:59,932 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:25:59,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:25:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:59,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:59,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:25:59,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:25:59,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 13:25:59,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:59,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:59,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:25:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:25:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:25:59,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:00,028 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 13:26:00,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233096885] [2020-10-29 13:26:00,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:00,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:26:00,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850624015] [2020-10-29 13:26:00,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:26:00,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:00,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:26:00,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:26:00,033 INFO L87 Difference]: Start difference. First operand 269 states and 385 transitions. Second operand 6 states. [2020-10-29 13:26:00,371 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:26:01,179 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:26:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:01,577 INFO L93 Difference]: Finished difference Result 607 states and 913 transitions. [2020-10-29 13:26:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:26:01,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-29 13:26:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:01,582 INFO L225 Difference]: With dead ends: 607 [2020-10-29 13:26:01,582 INFO L226 Difference]: Without dead ends: 409 [2020-10-29 13:26:01,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:26:01,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-29 13:26:01,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 406. [2020-10-29 13:26:01,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-29 13:26:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 599 transitions. [2020-10-29 13:26:01,636 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 599 transitions. Word has length 97 [2020-10-29 13:26:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:01,638 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 599 transitions. [2020-10-29 13:26:01,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:26:01,639 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 599 transitions. [2020-10-29 13:26:01,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 13:26:01,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:01,642 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] [2020-10-29 13:26:01,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:26:01,645 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:01,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:01,646 INFO L82 PathProgramCache]: Analyzing trace with hash 498340441, now seen corresponding path program 1 times [2020-10-29 13:26:01,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:01,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643522959] [2020-10-29 13:26:01,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:01,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:01,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:01,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:01,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:02,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:02,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:06,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:06,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:06,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 13:26:06,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:26:06,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:26:06,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:06,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:26:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:26:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 13:26:06,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:07,025 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:26:07,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:07,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:07,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:07,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:07,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 13:26:07,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:07,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:26:07,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:26:07,118 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 13:26:07,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643522959] [2020-10-29 13:26:07,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:07,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:26:07,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152761842] [2020-10-29 13:26:07,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:26:07,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:07,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:26:07,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:26:07,124 INFO L87 Difference]: Start difference. First operand 406 states and 599 transitions. Second operand 6 states. [2020-10-29 13:26:07,409 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:26:08,202 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:26:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:08,675 INFO L93 Difference]: Finished difference Result 1058 states and 1615 transitions. [2020-10-29 13:26:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:26:08,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-29 13:26:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:08,680 INFO L225 Difference]: With dead ends: 1058 [2020-10-29 13:26:08,681 INFO L226 Difference]: Without dead ends: 711 [2020-10-29 13:26:08,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:26:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-10-29 13:26:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 708. [2020-10-29 13:26:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2020-10-29 13:26:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1070 transitions. [2020-10-29 13:26:08,740 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1070 transitions. Word has length 98 [2020-10-29 13:26:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:08,741 INFO L481 AbstractCegarLoop]: Abstraction has 708 states and 1070 transitions. [2020-10-29 13:26:08,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:26:08,741 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1070 transitions. [2020-10-29 13:26:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 13:26:08,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:08,744 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] [2020-10-29 13:26:08,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:26:08,744 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:08,745 INFO L82 PathProgramCache]: Analyzing trace with hash -632790761, now seen corresponding path program 1 times [2020-10-29 13:26:08,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:08,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921886016] [2020-10-29 13:26:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:08,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:08,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:08,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:09,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:09,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:09,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:09,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:13,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:13,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 13:26:13,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:26:13,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:26:13,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:13,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:26:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:26:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 13:26:13,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:14,162 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:26:14,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:14,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:14,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:14,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:14,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 13:26:14,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:14,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:14,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:14,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:14,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:26:14,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:26:14,278 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 13:26:14,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921886016] [2020-10-29 13:26:14,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:14,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:26:14,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632073993] [2020-10-29 13:26:14,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:26:14,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:14,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:26:14,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:26:14,281 INFO L87 Difference]: Start difference. First operand 708 states and 1070 transitions. Second operand 6 states. [2020-10-29 13:26:14,560 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:26:15,222 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:26:15,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:15,669 INFO L93 Difference]: Finished difference Result 1912 states and 2948 transitions. [2020-10-29 13:26:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:26:15,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-29 13:26:15,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:15,680 INFO L225 Difference]: With dead ends: 1912 [2020-10-29 13:26:15,680 INFO L226 Difference]: Without dead ends: 1271 [2020-10-29 13:26:15,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:26:15,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2020-10-29 13:26:15,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1268. [2020-10-29 13:26:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2020-10-29 13:26:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1937 transitions. [2020-10-29 13:26:15,777 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1937 transitions. Word has length 99 [2020-10-29 13:26:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:15,777 INFO L481 AbstractCegarLoop]: Abstraction has 1268 states and 1937 transitions. [2020-10-29 13:26:15,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:26:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1937 transitions. [2020-10-29 13:26:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 13:26:15,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:15,779 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] [2020-10-29 13:26:15,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:26:15,780 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:15,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:15,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1359050695, now seen corresponding path program 1 times [2020-10-29 13:26:15,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:15,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726364760] [2020-10-29 13:26:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:15,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:16,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:16,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:17,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:20,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:20,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 13:26:20,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:26:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:26:20,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:20,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:26:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:26:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:26:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:21,186 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:26:21,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:21,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:21,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:21,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 13:26:21,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:21,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:26:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:21,287 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 13:26:21,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726364760] [2020-10-29 13:26:21,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:21,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:26:21,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138781333] [2020-10-29 13:26:21,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:26:21,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:21,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:26:21,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:26:21,290 INFO L87 Difference]: Start difference. First operand 1268 states and 1937 transitions. Second operand 6 states. [2020-10-29 13:26:21,640 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:26:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:22,430 INFO L93 Difference]: Finished difference Result 2473 states and 3809 transitions. [2020-10-29 13:26:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:26:22,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-29 13:26:22,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:22,440 INFO L225 Difference]: With dead ends: 2473 [2020-10-29 13:26:22,440 INFO L226 Difference]: Without dead ends: 1268 [2020-10-29 13:26:22,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:26:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-10-29 13:26:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1268. [2020-10-29 13:26:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2020-10-29 13:26:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1920 transitions. [2020-10-29 13:26:22,541 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1920 transitions. Word has length 100 [2020-10-29 13:26:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:22,543 INFO L481 AbstractCegarLoop]: Abstraction has 1268 states and 1920 transitions. [2020-10-29 13:26:22,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:26:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1920 transitions. [2020-10-29 13:26:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 13:26:22,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:22,547 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] [2020-10-29 13:26:22,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:26:22,547 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:22,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:22,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1632832090, now seen corresponding path program 1 times [2020-10-29 13:26:22,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:22,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385960129] [2020-10-29 13:26:22,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:22,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:22,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:23,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:24,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:25,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:27,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:27,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 13:26:27,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:26:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:26:27,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:27,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:27,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:26:27,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:26:27,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 13:26:27,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:27,990 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:26:27,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:28,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:28,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:28,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:28,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:26:28,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:28,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:28,062 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 13:26:28,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385960129] [2020-10-29 13:26:28,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:28,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:26:28,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975092331] [2020-10-29 13:26:28,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:26:28,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:28,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:26:28,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:26:28,066 INFO L87 Difference]: Start difference. First operand 1268 states and 1920 transitions. Second operand 8 states. [2020-10-29 13:26:28,373 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:26:29,289 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:26:29,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:29,974 INFO L93 Difference]: Finished difference Result 2997 states and 4592 transitions. [2020-10-29 13:26:29,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:26:29,974 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-29 13:26:29,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:29,984 INFO L225 Difference]: With dead ends: 2997 [2020-10-29 13:26:29,985 INFO L226 Difference]: Without dead ends: 1811 [2020-10-29 13:26:29,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 13:26:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2020-10-29 13:26:30,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1268. [2020-10-29 13:26:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2020-10-29 13:26:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1919 transitions. [2020-10-29 13:26:30,138 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1919 transitions. Word has length 101 [2020-10-29 13:26:30,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:30,138 INFO L481 AbstractCegarLoop]: Abstraction has 1268 states and 1919 transitions. [2020-10-29 13:26:30,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:26:30,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1919 transitions. [2020-10-29 13:26:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 13:26:30,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:30,140 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] [2020-10-29 13:26:30,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:26:30,140 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:30,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:30,141 INFO L82 PathProgramCache]: Analyzing trace with hash -918550525, now seen corresponding path program 1 times [2020-10-29 13:26:30,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:30,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112827373] [2020-10-29 13:26:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:30,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:30,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:30,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:30,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:31,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:31,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:32,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:33,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:34,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:35,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:35,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:35,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 13:26:35,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:26:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:26:35,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:35,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:26:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:26:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 13:26:35,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:35,578 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:26:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:35,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:35,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:35,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:35,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:35,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:26:35,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:35,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:35,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:35,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:35,639 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 13:26:35,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112827373] [2020-10-29 13:26:35,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:35,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:26:35,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916917537] [2020-10-29 13:26:35,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:26:35,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:35,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:26:35,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:26:35,642 INFO L87 Difference]: Start difference. First operand 1268 states and 1919 transitions. Second operand 9 states. [2020-10-29 13:26:35,939 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:26:36,999 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:26:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:37,827 INFO L93 Difference]: Finished difference Result 2950 states and 4511 transitions. [2020-10-29 13:26:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:26:37,828 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-29 13:26:37,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:37,838 INFO L225 Difference]: With dead ends: 2950 [2020-10-29 13:26:37,838 INFO L226 Difference]: Without dead ends: 1827 [2020-10-29 13:26:37,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:26:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2020-10-29 13:26:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1268. [2020-10-29 13:26:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2020-10-29 13:26:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1917 transitions. [2020-10-29 13:26:38,036 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1917 transitions. Word has length 102 [2020-10-29 13:26:38,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:38,036 INFO L481 AbstractCegarLoop]: Abstraction has 1268 states and 1917 transitions. [2020-10-29 13:26:38,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:26:38,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1917 transitions. [2020-10-29 13:26:38,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:26:38,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:38,038 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] [2020-10-29 13:26:38,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:26:38,038 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:38,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:38,039 INFO L82 PathProgramCache]: Analyzing trace with hash -2006489082, now seen corresponding path program 1 times [2020-10-29 13:26:38,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:38,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995172201] [2020-10-29 13:26:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:38,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:38,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:38,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:38,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:38,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:38,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:38,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:39,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:41,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:43,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:43,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:26:43,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:26:43,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:26:43,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:43,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:26:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:26:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 13:26:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:43,597 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:26:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:43,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:43,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:43,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:43,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:26:43,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:43,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:43,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:43,672 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 13:26:43,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995172201] [2020-10-29 13:26:43,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:43,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:26:43,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472970957] [2020-10-29 13:26:43,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:26:43,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:43,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:26:43,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:26:43,674 INFO L87 Difference]: Start difference. First operand 1268 states and 1917 transitions. Second operand 9 states. [2020-10-29 13:26:43,958 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:26:45,173 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:26:46,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:46,415 INFO L93 Difference]: Finished difference Result 2978 states and 4549 transitions. [2020-10-29 13:26:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:26:46,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-29 13:26:46,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:46,426 INFO L225 Difference]: With dead ends: 2978 [2020-10-29 13:26:46,426 INFO L226 Difference]: Without dead ends: 1827 [2020-10-29 13:26:46,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:26:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2020-10-29 13:26:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1268. [2020-10-29 13:26:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2020-10-29 13:26:46,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1913 transitions. [2020-10-29 13:26:46,633 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1913 transitions. Word has length 103 [2020-10-29 13:26:46,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:46,634 INFO L481 AbstractCegarLoop]: Abstraction has 1268 states and 1913 transitions. [2020-10-29 13:26:46,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:26:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1913 transitions. [2020-10-29 13:26:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:26:46,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:46,635 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] [2020-10-29 13:26:46,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:26:46,636 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:46,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:46,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1287157715, now seen corresponding path program 1 times [2020-10-29 13:26:46,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:46,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886960337] [2020-10-29 13:26:46,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:46,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:47,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:48,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:51,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:51,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:26:51,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:26:51,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:26:51,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:51,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:51,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:26:51,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:26:51,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 13:26:51,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:52,009 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:26:52,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:52,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:52,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:52,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:52,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:26:52,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:52,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:26:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:26:52,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:26:52,085 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 13:26:52,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886960337] [2020-10-29 13:26:52,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:52,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:26:52,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629004735] [2020-10-29 13:26:52,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:26:52,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:52,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:26:52,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:26:52,087 INFO L87 Difference]: Start difference. First operand 1268 states and 1913 transitions. Second operand 9 states. [2020-10-29 13:26:52,390 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:26:53,335 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:26:53,616 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:26:54,045 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:26:54,322 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:26:54,578 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:26:54,922 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:26:55,218 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:26:55,506 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:26:55,862 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:26:56,118 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:26:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:26:58,297 INFO L93 Difference]: Finished difference Result 14492 states and 22374 transitions. [2020-10-29 13:26:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:26:58,297 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-29 13:26:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:26:58,368 INFO L225 Difference]: With dead ends: 14492 [2020-10-29 13:26:58,368 INFO L226 Difference]: Without dead ends: 13417 [2020-10-29 13:26:58,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2020-10-29 13:26:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13417 states. [2020-10-29 13:26:59,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13417 to 2451. [2020-10-29 13:26:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2451 states. [2020-10-29 13:26:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3707 transitions. [2020-10-29 13:26:59,052 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3707 transitions. Word has length 104 [2020-10-29 13:26:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:26:59,053 INFO L481 AbstractCegarLoop]: Abstraction has 2451 states and 3707 transitions. [2020-10-29 13:26:59,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:26:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3707 transitions. [2020-10-29 13:26:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 13:26:59,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:59,055 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] [2020-10-29 13:26:59,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:26:59,056 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:59,057 INFO L82 PathProgramCache]: Analyzing trace with hash 457648390, now seen corresponding path program 1 times [2020-10-29 13:26:59,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:59,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797991356] [2020-10-29 13:26:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:59,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:59,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:59,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:00,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:00,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:00,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:04,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:04,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 13:27:04,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:27:04,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:27:04,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:04,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:27:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:27:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 13:27:04,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:04,482 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:27:04,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:04,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:04,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:04,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:27:04,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:04,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:04,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:04,538 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 13:27:04,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797991356] [2020-10-29 13:27:04,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:04,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:27:04,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384204737] [2020-10-29 13:27:04,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:27:04,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:04,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:27:04,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:27:04,540 INFO L87 Difference]: Start difference. First operand 2451 states and 3707 transitions. Second operand 9 states. [2020-10-29 13:27:04,865 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:27:06,060 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:27:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:07,667 INFO L93 Difference]: Finished difference Result 7017 states and 10671 transitions. [2020-10-29 13:27:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:27:07,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-29 13:27:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:07,691 INFO L225 Difference]: With dead ends: 7017 [2020-10-29 13:27:07,691 INFO L226 Difference]: Without dead ends: 4814 [2020-10-29 13:27:07,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:27:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4814 states. [2020-10-29 13:27:08,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4814 to 2451. [2020-10-29 13:27:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2451 states. [2020-10-29 13:27:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3699 transitions. [2020-10-29 13:27:08,201 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3699 transitions. Word has length 105 [2020-10-29 13:27:08,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:08,201 INFO L481 AbstractCegarLoop]: Abstraction has 2451 states and 3699 transitions. [2020-10-29 13:27:08,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:27:08,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3699 transitions. [2020-10-29 13:27:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:27:08,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:08,203 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] [2020-10-29 13:27:08,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:27:08,204 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:08,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:08,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1617591843, now seen corresponding path program 1 times [2020-10-29 13:27:08,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:08,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437461739] [2020-10-29 13:27:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:09,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:09,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:09,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:09,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:10,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:10,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:13,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:13,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:27:13,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:27:13,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:27:13,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:13,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:27:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:27:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 13:27:13,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:13,532 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:27:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:13,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:13,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:13,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:13,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:27:13,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:13,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:13,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:13,588 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 13:27:13,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437461739] [2020-10-29 13:27:13,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:13,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:27:13,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844259399] [2020-10-29 13:27:13,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:27:13,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:13,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:27:13,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:27:13,594 INFO L87 Difference]: Start difference. First operand 2451 states and 3699 transitions. Second operand 6 states. [2020-10-29 13:27:13,908 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:27:14,680 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:27:15,002 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:27:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:16,289 INFO L93 Difference]: Finished difference Result 6732 states and 10269 transitions. [2020-10-29 13:27:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:27:16,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:27:16,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:16,301 INFO L225 Difference]: With dead ends: 6732 [2020-10-29 13:27:16,302 INFO L226 Difference]: Without dead ends: 4585 [2020-10-29 13:27:16,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:27:16,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4585 states. [2020-10-29 13:27:17,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4585 to 4579. [2020-10-29 13:27:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4579 states. [2020-10-29 13:27:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 6935 transitions. [2020-10-29 13:27:17,163 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 6935 transitions. Word has length 106 [2020-10-29 13:27:17,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:17,164 INFO L481 AbstractCegarLoop]: Abstraction has 4579 states and 6935 transitions. [2020-10-29 13:27:17,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:27:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 6935 transitions. [2020-10-29 13:27:17,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:27:17,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:17,167 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] [2020-10-29 13:27:17,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:27:17,167 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:17,167 INFO L82 PathProgramCache]: Analyzing trace with hash 705182338, now seen corresponding path program 1 times [2020-10-29 13:27:17,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:17,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164017599] [2020-10-29 13:27:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:17,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:17,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:17,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:18,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:18,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:19,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:19,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:19,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:22,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:22,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:27:22,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:27:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:27:22,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:22,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:27:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 13:27:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 13:27:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:22,515 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:27:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:22,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:22,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:22,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:22,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:27:22,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:22,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:22,553 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 13:27:22,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164017599] [2020-10-29 13:27:22,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:22,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:27:22,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850671614] [2020-10-29 13:27:22,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:27:22,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:27:22,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:27:22,556 INFO L87 Difference]: Start difference. First operand 4579 states and 6935 transitions. Second operand 6 states. [2020-10-29 13:27:22,846 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:27:23,715 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:27:24,034 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:27:25,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:25,744 INFO L93 Difference]: Finished difference Result 11928 states and 18121 transitions. [2020-10-29 13:27:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:27:25,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:27:25,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:25,760 INFO L225 Difference]: With dead ends: 11928 [2020-10-29 13:27:25,760 INFO L226 Difference]: Without dead ends: 7701 [2020-10-29 13:27:25,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:27:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7701 states. [2020-10-29 13:27:26,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7701 to 6799. [2020-10-29 13:27:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6799 states. [2020-10-29 13:27:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6799 states to 6799 states and 10339 transitions. [2020-10-29 13:27:27,001 INFO L78 Accepts]: Start accepts. Automaton has 6799 states and 10339 transitions. Word has length 106 [2020-10-29 13:27:27,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:27,002 INFO L481 AbstractCegarLoop]: Abstraction has 6799 states and 10339 transitions. [2020-10-29 13:27:27,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:27:27,002 INFO L276 IsEmpty]: Start isEmpty. Operand 6799 states and 10339 transitions. [2020-10-29 13:27:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:27:27,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:27,005 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] [2020-10-29 13:27:27,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:27:27,005 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:27,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:27,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1796910689, now seen corresponding path program 1 times [2020-10-29 13:27:27,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:27,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025593661] [2020-10-29 13:27:27,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:27,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:28,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:29,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:29,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:30,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:30,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:32,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:32,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:27:32,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:27:32,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:27:32,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:32,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:27:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 13:27:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 13:27:32,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:32,404 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:27:32,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:27:32,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:32,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:32,466 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 13:27:32,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025593661] [2020-10-29 13:27:32,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:32,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:27:32,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922951595] [2020-10-29 13:27:32,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:27:32,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:32,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:27:32,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:27:32,469 INFO L87 Difference]: Start difference. First operand 6799 states and 10339 transitions. Second operand 6 states. [2020-10-29 13:27:32,813 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:27:33,747 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:27:34,051 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:27:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:36,005 INFO L93 Difference]: Finished difference Result 15388 states and 23401 transitions. [2020-10-29 13:27:36,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:27:36,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:27:36,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:36,023 INFO L225 Difference]: With dead ends: 15388 [2020-10-29 13:27:36,024 INFO L226 Difference]: Without dead ends: 9017 [2020-10-29 13:27:36,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:27:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9017 states. [2020-10-29 13:27:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9017 to 7899. [2020-10-29 13:27:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7899 states. [2020-10-29 13:27:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 12027 transitions. [2020-10-29 13:27:37,485 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 12027 transitions. Word has length 106 [2020-10-29 13:27:37,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:37,486 INFO L481 AbstractCegarLoop]: Abstraction has 7899 states and 12027 transitions. [2020-10-29 13:27:37,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:27:37,486 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 12027 transitions. [2020-10-29 13:27:37,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:27:37,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:37,489 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] [2020-10-29 13:27:37,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:27:37,489 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:37,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:37,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1087635897, now seen corresponding path program 1 times [2020-10-29 13:27:37,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:37,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457803989] [2020-10-29 13:27:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:37,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:38,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:38,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:38,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:42,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:42,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:27:42,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:27:42,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:27:42,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:42,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:27:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:27:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 13:27:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:42,786 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:27:42,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:42,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:42,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:42,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:42,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:42,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:27:42,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:42,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:27:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:27:42,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:42,818 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 13:27:42,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457803989] [2020-10-29 13:27:42,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:42,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:27:42,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109160717] [2020-10-29 13:27:42,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:27:42,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:42,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:27:42,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:27:42,819 INFO L87 Difference]: Start difference. First operand 7899 states and 12027 transitions. Second operand 6 states. [2020-10-29 13:27:43,069 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:27:44,346 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:27:51,736 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:27:54,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:54,971 INFO L93 Difference]: Finished difference Result 60335 states and 92237 transitions. [2020-10-29 13:27:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:27:54,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:27:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:55,086 INFO L225 Difference]: With dead ends: 60335 [2020-10-29 13:27:55,086 INFO L226 Difference]: Without dead ends: 52781 [2020-10-29 13:27:55,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:27:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52781 states. [2020-10-29 13:28:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52781 to 30561. [2020-10-29 13:28:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30561 states. [2020-10-29 13:28:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30561 states to 30561 states and 46547 transitions. [2020-10-29 13:28:01,445 INFO L78 Accepts]: Start accepts. Automaton has 30561 states and 46547 transitions. Word has length 106 [2020-10-29 13:28:01,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:01,445 INFO L481 AbstractCegarLoop]: Abstraction has 30561 states and 46547 transitions. [2020-10-29 13:28:01,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:28:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 30561 states and 46547 transitions. [2020-10-29 13:28:01,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:28:01,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:01,451 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] [2020-10-29 13:28:01,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:28:01,451 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:01,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:01,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1432364185, now seen corresponding path program 1 times [2020-10-29 13:28:01,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:01,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390740697] [2020-10-29 13:28:01,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:01,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:01,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:01,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:01,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:02,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:02,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:06,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:06,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:28:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:28:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:28:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:06,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:28:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:28:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 13:28:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:06,768 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:28:06,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:06,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:06,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:06,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:06,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:28:06,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:06,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:28:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:28:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:06,802 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 13:28:06,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390740697] [2020-10-29 13:28:06,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:06,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:28:06,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424413985] [2020-10-29 13:28:06,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:28:06,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:06,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:28:06,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:28:06,804 INFO L87 Difference]: Start difference. First operand 30561 states and 46547 transitions. Second operand 6 states. [2020-10-29 13:28:07,108 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:28:08,104 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:28:08,445 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:28:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:16,480 INFO L93 Difference]: Finished difference Result 72362 states and 109889 transitions. [2020-10-29 13:28:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:28:16,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-29 13:28:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:16,544 INFO L225 Difference]: With dead ends: 72362 [2020-10-29 13:28:16,544 INFO L226 Difference]: Without dead ends: 42711 [2020-10-29 13:28:16,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:28:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42711 states. [2020-10-29 13:28:23,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42711 to 34929. [2020-10-29 13:28:23,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34929 states. [2020-10-29 13:28:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34929 states to 34929 states and 53227 transitions. [2020-10-29 13:28:23,645 INFO L78 Accepts]: Start accepts. Automaton has 34929 states and 53227 transitions. Word has length 107 [2020-10-29 13:28:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:23,645 INFO L481 AbstractCegarLoop]: Abstraction has 34929 states and 53227 transitions. [2020-10-29 13:28:23,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:28:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 34929 states and 53227 transitions. [2020-10-29 13:28:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:28:23,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:23,650 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] [2020-10-29 13:28:23,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:28:23,650 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:23,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:23,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1868363493, now seen corresponding path program 1 times [2020-10-29 13:28:23,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:23,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076168228] [2020-10-29 13:28:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:24,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:25,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:28,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:28:28,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:28:28,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:28:28,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:28,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:28:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:28:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 13:28:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:28,893 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 18 [2020-10-29 13:28:29,198 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:28:29,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:29,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:29,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:29,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:29,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:29,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:28:29,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:29,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:28:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:28:29,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:29,257 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 13:28:29,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076168228] [2020-10-29 13:28:29,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:29,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:28:29,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714614413] [2020-10-29 13:28:29,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:28:29,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:29,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:28:29,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:28:29,259 INFO L87 Difference]: Start difference. First operand 34929 states and 53227 transitions. Second operand 10 states. [2020-10-29 13:28:29,559 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:28:30,908 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:28:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:41,355 INFO L93 Difference]: Finished difference Result 86104 states and 131345 transitions. [2020-10-29 13:28:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:28:41,356 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 107 [2020-10-29 13:28:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:41,437 INFO L225 Difference]: With dead ends: 86104 [2020-10-29 13:28:41,437 INFO L226 Difference]: Without dead ends: 51823 [2020-10-29 13:28:41,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:28:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51823 states. [2020-10-29 13:28:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51823 to 34732. [2020-10-29 13:28:48,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34732 states. [2020-10-29 13:28:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34732 states to 34732 states and 52922 transitions. [2020-10-29 13:28:48,753 INFO L78 Accepts]: Start accepts. Automaton has 34732 states and 52922 transitions. Word has length 107 [2020-10-29 13:28:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:48,753 INFO L481 AbstractCegarLoop]: Abstraction has 34732 states and 52922 transitions. [2020-10-29 13:28:48,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:28:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 34732 states and 52922 transitions. [2020-10-29 13:28:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:28:48,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:48,758 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] [2020-10-29 13:28:48,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:28:48,758 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:48,759 INFO L82 PathProgramCache]: Analyzing trace with hash -776635142, now seen corresponding path program 1 times [2020-10-29 13:28:48,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:48,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589844004] [2020-10-29 13:28:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:48,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:48,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:49,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:49,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:53,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:53,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:28:53,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:28:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:28:53,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:53,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:28:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:28:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 13:28:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:54,316 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:28:54,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:54,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:54,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:54,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:54,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:28:54,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:54,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:28:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:28:54,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:54,392 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 13:28:54,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589844004] [2020-10-29 13:28:54,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:54,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:28:54,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712599688] [2020-10-29 13:28:54,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:28:54,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:54,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:28:54,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:28:54,394 INFO L87 Difference]: Start difference. First operand 34732 states and 52922 transitions. Second operand 10 states. [2020-10-29 13:28:55,025 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 206 [2020-10-29 13:28:56,414 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-29 13:29:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:08,165 INFO L93 Difference]: Finished difference Result 85830 states and 130928 transitions. [2020-10-29 13:29:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:29:08,165 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 107 [2020-10-29 13:29:08,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:08,223 INFO L225 Difference]: With dead ends: 85830 [2020-10-29 13:29:08,223 INFO L226 Difference]: Without dead ends: 51699 [2020-10-29 13:29:08,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:29:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51699 states. [2020-10-29 13:29:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51699 to 34608. [2020-10-29 13:29:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34608 states. [2020-10-29 13:29:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34608 states to 34608 states and 52741 transitions. [2020-10-29 13:29:16,659 INFO L78 Accepts]: Start accepts. Automaton has 34608 states and 52741 transitions. Word has length 107 [2020-10-29 13:29:16,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:16,660 INFO L481 AbstractCegarLoop]: Abstraction has 34608 states and 52741 transitions. [2020-10-29 13:29:16,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:29:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 34608 states and 52741 transitions. [2020-10-29 13:29:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:29:16,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:16,663 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] [2020-10-29 13:29:16,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 13:29:16,663 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:16,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:16,664 INFO L82 PathProgramCache]: Analyzing trace with hash -587126246, now seen corresponding path program 1 times [2020-10-29 13:29:16,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:16,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563377851] [2020-10-29 13:29:16,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:17,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:17,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:18,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:18,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:21,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:21,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:29:21,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:29:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:29:21,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:21,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:29:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:29:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 13:29:21,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:22,129 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:29:22,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:22,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:22,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:22,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:22,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:29:22,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:22,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:22,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:22,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:22,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:22,185 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 13:29:22,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563377851] [2020-10-29 13:29:22,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:22,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:29:22,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500288685] [2020-10-29 13:29:22,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:29:22,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:22,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:29:22,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:22,187 INFO L87 Difference]: Start difference. First operand 34608 states and 52741 transitions. Second operand 9 states. [2020-10-29 13:29:22,522 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:29:24,004 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 195