/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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:18:31,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:18:31,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:18:31,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:18:31,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:18:31,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:18:31,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:18:31,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:18:31,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:18:31,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:18:31,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:18:31,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:18:31,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:18:31,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:18:31,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:18:31,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:18:31,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:18:31,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:18:31,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:18:31,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:18:31,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:18:31,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:18:31,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:18:31,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:18:31,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:18:31,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:18:31,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:18:31,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:18:31,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:18:31,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:18:31,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:18:31,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:18:31,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:18:31,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:18:31,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:18:31,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:18:31,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:18:31,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:18:31,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:18:31,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:18:31,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:18:31,179 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 13:18:31,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:18:31,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:18:31,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:18:31,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:18:31,210 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:18:31,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:18:31,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:18:31,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:18:31,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:18:31,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:18:31,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:18:31,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:18:31,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:18:31,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:18:31,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:18:31,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:18:31,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:18:31,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:18:31,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:18:31,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:18:31,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:18:31,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:18:31,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:18:31,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:18:31,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:18:31,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:18:31,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:18:31,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:18:31,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:18:31,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:18:31,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:18:31,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:18:31,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:18:31,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:18:31,638 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:18:31,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:18:31,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9299321b9/5e4cf918254d4166b10d5c03b0cbc708/FLAG62f043396 [2020-10-29 13:18:32,586 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:18:32,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:18:32,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9299321b9/5e4cf918254d4166b10d5c03b0cbc708/FLAG62f043396 [2020-10-29 13:18:32,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9299321b9/5e4cf918254d4166b10d5c03b0cbc708 [2020-10-29 13:18:32,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:18:32,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:18:32,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:18:32,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:18:32,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:18:32,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:18:32" (1/1) ... [2020-10-29 13:18:32,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5750c561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:18:32, skipping insertion in model container [2020-10-29 13:18:32,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:18:32" (1/1) ... [2020-10-29 13:18:32,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:18:32,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:18:33,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:18:33,617 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:18:33,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:18:33,863 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:18:33,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:18:33 WrapperNode [2020-10-29 13:18:33,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:18:33,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:18:33,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:18:33,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:18:33,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:18:33" (1/1) ... [2020-10-29 13:18:33,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:18:33" (1/1) ... [2020-10-29 13:18:33,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:18:33" (1/1) ... [2020-10-29 13:18:33,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:18:33" (1/1) ... [2020-10-29 13:18:33,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:18:33" (1/1) ... [2020-10-29 13:18:33,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:18:33" (1/1) ... [2020-10-29 13:18:34,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:18:33" (1/1) ... [2020-10-29 13:18:34,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:18:34,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:18:34,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:18:34,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:18:34,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:18:33" (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 13:18:34,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:18:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:18:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:18:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:18:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:18:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:18:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:18:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:18:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:18:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:18:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:18:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:18:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:18:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:18:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:18:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:18:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:18:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:18:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:18:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:18:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:18:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:18:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:18:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:18:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:18:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:18:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:18:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:18:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:18:36,121 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:18:36,122 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:18:36,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:18:36 BoogieIcfgContainer [2020-10-29 13:18:36,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:18:36,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:18:36,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:18:36,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:18:36,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:18:32" (1/3) ... [2020-10-29 13:18:36,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a2dc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:18:36, skipping insertion in model container [2020-10-29 13:18:36,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:18:33" (2/3) ... [2020-10-29 13:18:36,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a2dc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:18:36, skipping insertion in model container [2020-10-29 13:18:36,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:18:36" (3/3) ... [2020-10-29 13:18:36,133 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:18:36,144 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:18:36,150 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:18:36,162 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:18:36,191 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:18:36,192 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:18:36,192 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:18:36,192 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:18:36,192 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:18:36,192 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:18:36,192 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:18:36,193 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:18:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states. [2020-10-29 13:18:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 13:18:36,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:18:36,237 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] [2020-10-29 13:18:36,237 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:18:36,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:18:36,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1736315952, now seen corresponding path program 1 times [2020-10-29 13:18:36,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:18:36,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4073067] [2020-10-29 13:18:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:18:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:18:36,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:37,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:37,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:39,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:39,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:40,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:40,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:40,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:41,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:41,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:18:41,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 13:18:41,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:18:41,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:18:41,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:18:41,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:18:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:18:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 13:18:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 13:18:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:18:42,217 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:18:42,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:18:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:18:42,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:42,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:18:42,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:18:42,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:18:42,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:18:42,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:18:42,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:18:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:18:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:18:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:18:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:18:42,297 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 13:18:42,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4073067] [2020-10-29 13:18:42,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:18:42,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:18:42,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412669305] [2020-10-29 13:18:42,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:18:42,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:18:42,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:18:42,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:18:42,324 INFO L87 Difference]: Start difference. First operand 366 states. Second operand 6 states. [2020-10-29 13:18:42,871 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 13:18:46,206 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-29 13:18:46,969 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 13:18:48,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:18:48,348 INFO L93 Difference]: Finished difference Result 1173 states and 1986 transitions. [2020-10-29 13:18:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:18:48,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-29 13:18:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:18:48,375 INFO L225 Difference]: With dead ends: 1173 [2020-10-29 13:18:48,375 INFO L226 Difference]: Without dead ends: 1047 [2020-10-29 13:18:48,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:18:48,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-10-29 13:18:48,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 682. [2020-10-29 13:18:48,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2020-10-29 13:18:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 946 transitions. [2020-10-29 13:18:48,512 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 946 transitions. Word has length 63 [2020-10-29 13:18:48,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:18:48,513 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 946 transitions. [2020-10-29 13:18:48,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:18:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 946 transitions. [2020-10-29 13:18:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 13:18:48,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:18:48,519 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] [2020-10-29 13:18:48,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:18:48,519 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:18:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:18:48,520 INFO L82 PathProgramCache]: Analyzing trace with hash 417435776, now seen corresponding path program 1 times [2020-10-29 13:18:48,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:18:48,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051534705] [2020-10-29 13:18:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:18:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:18:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:48,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:49,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:53,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:53,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:18:53,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 13:18:53,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:18:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:18:53,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:18:53,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:18:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:18:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:18:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:18:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:18:54,152 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:18:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:18:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:18:54,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:54,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:18:54,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:18:54,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:18:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 13:18:54,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:18:54,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:18:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:18:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:18:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:18:54,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:18:54,243 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 13:18:54,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051534705] [2020-10-29 13:18:54,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:18:54,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:18:54,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748416188] [2020-10-29 13:18:54,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:18:54,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:18:54,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:18:54,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:18:54,247 INFO L87 Difference]: Start difference. First operand 682 states and 946 transitions. Second operand 9 states. [2020-10-29 13:18:54,744 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-29 13:18:56,839 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-29 13:18:58,247 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 13:18:58,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:18:58,425 INFO L93 Difference]: Finished difference Result 1790 states and 2684 transitions. [2020-10-29 13:18:58,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:18:58,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-29 13:18:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:18:58,437 INFO L225 Difference]: With dead ends: 1790 [2020-10-29 13:18:58,438 INFO L226 Difference]: Without dead ends: 1560 [2020-10-29 13:18:58,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:18:58,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2020-10-29 13:18:58,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 668. [2020-10-29 13:18:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2020-10-29 13:18:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 919 transitions. [2020-10-29 13:18:58,521 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 919 transitions. Word has length 63 [2020-10-29 13:18:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:18:58,521 INFO L481 AbstractCegarLoop]: Abstraction has 668 states and 919 transitions. [2020-10-29 13:18:58,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:18:58,522 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 919 transitions. [2020-10-29 13:18:58,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 13:18:58,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:18:58,526 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] [2020-10-29 13:18:58,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:18:58,527 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:18:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:18:58,530 INFO L82 PathProgramCache]: Analyzing trace with hash -583301902, now seen corresponding path program 1 times [2020-10-29 13:18:58,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:18:58,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597080763] [2020-10-29 13:18:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:18:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:18:58,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:58,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:18:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:01,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:01,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:01,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:01,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:02,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:02,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:02,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:03,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:03,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 13:19:03,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:19:03,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 13:19:03,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:03,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:03,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:19:03,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:19:03,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 13:19:03,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:19:04,085 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:19:04,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:19:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:04,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:04,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:19:04,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:19:04,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 13:19:04,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:04,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:19:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:19:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:19:04,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:19:04,168 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 13:19:04,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597080763] [2020-10-29 13:19:04,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:19:04,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:19:04,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233651564] [2020-10-29 13:19:04,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:19:04,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:19:04,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:19:04,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:19:04,175 INFO L87 Difference]: Start difference. First operand 668 states and 919 transitions. Second operand 6 states. [2020-10-29 13:19:04,644 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-29 13:19:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:19:06,218 INFO L93 Difference]: Finished difference Result 1181 states and 1668 transitions. [2020-10-29 13:19:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:19:06,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-29 13:19:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:19:06,225 INFO L225 Difference]: With dead ends: 1181 [2020-10-29 13:19:06,228 INFO L226 Difference]: Without dead ends: 616 [2020-10-29 13:19:06,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:19:06,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-10-29 13:19:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2020-10-29 13:19:06,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-10-29 13:19:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 855 transitions. [2020-10-29 13:19:06,280 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 855 transitions. Word has length 63 [2020-10-29 13:19:06,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:19:06,282 INFO L481 AbstractCegarLoop]: Abstraction has 616 states and 855 transitions. [2020-10-29 13:19:06,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:19:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 855 transitions. [2020-10-29 13:19:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 13:19:06,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:19:06,283 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] [2020-10-29 13:19:06,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:19:06,284 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:19:06,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:19:06,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1276934602, now seen corresponding path program 1 times [2020-10-29 13:19:06,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:19:06,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117759167] [2020-10-29 13:19:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:19:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:06,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:06,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:06,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:07,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:07,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:11,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:11,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 13:19:11,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:19:11,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:19:11,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:11,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:19:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:19:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 13:19:11,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:19:11,964 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:19:11,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:19:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:12,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:12,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:19:12,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:19:12,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 13:19:12,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:12,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:19:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:19:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:19:12,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:19:12,045 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 13:19:12,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117759167] [2020-10-29 13:19:12,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:19:12,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:19:12,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376635913] [2020-10-29 13:19:12,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:19:12,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:19:12,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:19:12,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:19:12,049 INFO L87 Difference]: Start difference. First operand 616 states and 855 transitions. Second operand 6 states. [2020-10-29 13:19:12,977 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 237 [2020-10-29 13:19:14,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:19:14,463 INFO L93 Difference]: Finished difference Result 1129 states and 1600 transitions. [2020-10-29 13:19:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:19:14,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-29 13:19:14,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:19:14,469 INFO L225 Difference]: With dead ends: 1129 [2020-10-29 13:19:14,470 INFO L226 Difference]: Without dead ends: 596 [2020-10-29 13:19:14,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:19:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-10-29 13:19:14,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2020-10-29 13:19:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-10-29 13:19:14,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 827 transitions. [2020-10-29 13:19:14,539 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 827 transitions. Word has length 64 [2020-10-29 13:19:14,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:19:14,540 INFO L481 AbstractCegarLoop]: Abstraction has 596 states and 827 transitions. [2020-10-29 13:19:14,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:19:14,540 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 827 transitions. [2020-10-29 13:19:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 13:19:14,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:19:14,542 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] [2020-10-29 13:19:14,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:19:14,543 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:19:14,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:19:14,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1738980884, now seen corresponding path program 1 times [2020-10-29 13:19:14,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:19:14,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055987663] [2020-10-29 13:19:14,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:19:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:14,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:14,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:15,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:15,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:15,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:15,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:15,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:16,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:17,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:19,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:19,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 13:19:19,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:19:19,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:19:19,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:19,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:19:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:19:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 13:19:19,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:19:20,066 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:19:20,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:19:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:20,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:20,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:19:20,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:19:20,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:19:20,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:20,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:19:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:19:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:19:20,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:19:20,115 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 13:19:20,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055987663] [2020-10-29 13:19:20,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:19:20,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:19:20,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190102541] [2020-10-29 13:19:20,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:19:20,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:19:20,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:19:20,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:19:20,130 INFO L87 Difference]: Start difference. First operand 596 states and 827 transitions. Second operand 6 states. [2020-10-29 13:19:20,592 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 13:19:22,717 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-29 13:19:23,448 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 13:19:24,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:19:24,828 INFO L93 Difference]: Finished difference Result 3117 states and 4518 transitions. [2020-10-29 13:19:24,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:19:24,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-29 13:19:24,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:19:24,846 INFO L225 Difference]: With dead ends: 3117 [2020-10-29 13:19:24,847 INFO L226 Difference]: Without dead ends: 2759 [2020-10-29 13:19:24,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:19:24,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2020-10-29 13:19:24,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 1546. [2020-10-29 13:19:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-10-29 13:19:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 2229 transitions. [2020-10-29 13:19:25,003 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 2229 transitions. Word has length 65 [2020-10-29 13:19:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:19:25,004 INFO L481 AbstractCegarLoop]: Abstraction has 1546 states and 2229 transitions. [2020-10-29 13:19:25,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:19:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 2229 transitions. [2020-10-29 13:19:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 13:19:25,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:19:25,006 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] [2020-10-29 13:19:25,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:19:25,007 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:19:25,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:19:25,007 INFO L82 PathProgramCache]: Analyzing trace with hash 980699654, now seen corresponding path program 1 times [2020-10-29 13:19:25,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:19:25,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987453550] [2020-10-29 13:19:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:19:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:25,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:25,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:25,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:26,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:26,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:27,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:27,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:27,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:28,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:28,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:29,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:29,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:30,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:30,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:30,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 13:19:30,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:19:30,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 13:19:30,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:30,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:19:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:19:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 13:19:30,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:19:30,572 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:19:30,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:19:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:30,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:30,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:19:30,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:19:30,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:19:30,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:30,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:19:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:19:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:19:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:19:30,623 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 13:19:30,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987453550] [2020-10-29 13:19:30,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:19:30,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:19:30,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436608662] [2020-10-29 13:19:30,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:19:30,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:19:30,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:19:30,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:19:30,627 INFO L87 Difference]: Start difference. First operand 1546 states and 2229 transitions. Second operand 7 states. [2020-10-29 13:19:31,153 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2020-10-29 13:19:32,718 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 13:19:33,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:19:33,394 INFO L93 Difference]: Finished difference Result 3598 states and 5240 transitions. [2020-10-29 13:19:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:19:33,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-29 13:19:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:19:33,408 INFO L225 Difference]: With dead ends: 3598 [2020-10-29 13:19:33,409 INFO L226 Difference]: Without dead ends: 2531 [2020-10-29 13:19:33,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:19:33,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2020-10-29 13:19:33,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1546. [2020-10-29 13:19:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-10-29 13:19:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 2225 transitions. [2020-10-29 13:19:33,574 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 2225 transitions. Word has length 66 [2020-10-29 13:19:33,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:19:33,574 INFO L481 AbstractCegarLoop]: Abstraction has 1546 states and 2225 transitions. [2020-10-29 13:19:33,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:19:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 2225 transitions. [2020-10-29 13:19:33,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 13:19:33,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:19:33,577 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] [2020-10-29 13:19:33,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:19:33,577 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:19:33,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:19:33,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1243478100, now seen corresponding path program 1 times [2020-10-29 13:19:33,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:19:33,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241672826] [2020-10-29 13:19:33,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:19:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:33,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:33,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:34,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:35,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:35,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:36,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:36,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:36,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:36,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:37,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:38,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:38,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 13:19:38,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 13:19:38,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:19:38,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:38,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:19:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:19:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:19:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:19:39,166 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:19:39,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:19:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:39,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:39,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:39,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:19:39,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:19:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:19:39,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:39,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:19:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:19:39,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:19:39,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:19:39,209 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 13:19:39,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241672826] [2020-10-29 13:19:39,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:19:39,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:19:39,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045320862] [2020-10-29 13:19:39,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:19:39,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:19:39,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:19:39,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:19:39,212 INFO L87 Difference]: Start difference. First operand 1546 states and 2225 transitions. Second operand 8 states. [2020-10-29 13:19:39,711 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-29 13:19:41,368 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 13:19:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:19:42,542 INFO L93 Difference]: Finished difference Result 4357 states and 6415 transitions. [2020-10-29 13:19:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:19:42,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-29 13:19:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:19:42,561 INFO L225 Difference]: With dead ends: 4357 [2020-10-29 13:19:42,562 INFO L226 Difference]: Without dead ends: 4351 [2020-10-29 13:19:42,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:19:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2020-10-29 13:19:42,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 1546. [2020-10-29 13:19:42,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-10-29 13:19:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 2223 transitions. [2020-10-29 13:19:42,741 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 2223 transitions. Word has length 66 [2020-10-29 13:19:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:19:42,741 INFO L481 AbstractCegarLoop]: Abstraction has 1546 states and 2223 transitions. [2020-10-29 13:19:42,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:19:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 2223 transitions. [2020-10-29 13:19:42,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 13:19:42,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:19:42,743 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] [2020-10-29 13:19:42,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:19:42,744 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:19:42,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:19:42,744 INFO L82 PathProgramCache]: Analyzing trace with hash 365742066, now seen corresponding path program 1 times [2020-10-29 13:19:42,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:19:42,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097996499] [2020-10-29 13:19:42,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:19:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:42,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:42,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:43,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:44,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:44,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:44,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:45,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:45,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:46,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:46,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:47,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:47,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:47,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:47,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:47,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 13:19:47,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-29 13:19:47,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:19:47,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:47,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:19:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:19:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 13:19:47,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:19:48,321 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:19:48,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:19:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:48,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:48,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:48,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:19:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:19:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:19:48,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:48,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:19:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:19:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:19:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:19:48,360 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 13:19:48,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097996499] [2020-10-29 13:19:48,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:19:48,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:19:48,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268268356] [2020-10-29 13:19:48,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:19:48,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:19:48,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:19:48,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:19:48,366 INFO L87 Difference]: Start difference. First operand 1546 states and 2223 transitions. Second operand 8 states. [2020-10-29 13:19:48,868 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-29 13:19:51,483 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 13:19:52,006 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-29 13:19:53,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:19:53,080 INFO L93 Difference]: Finished difference Result 3133 states and 4596 transitions. [2020-10-29 13:19:53,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 13:19:53,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-29 13:19:53,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:19:53,095 INFO L225 Difference]: With dead ends: 3133 [2020-10-29 13:19:53,095 INFO L226 Difference]: Without dead ends: 2261 [2020-10-29 13:19:53,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:19:53,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-10-29 13:19:53,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 1546. [2020-10-29 13:19:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-10-29 13:19:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 2217 transitions. [2020-10-29 13:19:53,301 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 2217 transitions. Word has length 66 [2020-10-29 13:19:53,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:19:53,301 INFO L481 AbstractCegarLoop]: Abstraction has 1546 states and 2217 transitions. [2020-10-29 13:19:53,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:19:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 2217 transitions. [2020-10-29 13:19:53,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 13:19:53,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:19:53,306 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] [2020-10-29 13:19:53,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:19:53,307 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:19:53,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:19:53,307 INFO L82 PathProgramCache]: Analyzing trace with hash 817649407, now seen corresponding path program 1 times [2020-10-29 13:19:53,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:19:53,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938757525] [2020-10-29 13:19:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:19:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:53,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:53,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:57,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:57,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 13:19:57,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:19:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3680 [2020-10-29 13:19:57,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:57,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:19:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:19:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:19:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:19:57,609 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:19:57,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:19:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:19:57,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:19:57,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:19:57,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:19:57,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:19:57,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:19:57,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:19:57,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:19:57,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:19:57,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:19:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:19:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:19:57,652 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 13:19:57,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938757525] [2020-10-29 13:19:57,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:19:57,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:19:57,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245763168] [2020-10-29 13:19:57,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:19:57,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:19:57,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:19:57,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:19:57,655 INFO L87 Difference]: Start difference. First operand 1546 states and 2217 transitions. Second operand 9 states. [2020-10-29 13:19:58,205 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-29 13:20:00,378 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2020-10-29 13:20:01,024 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-29 13:20:01,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:20:01,769 INFO L93 Difference]: Finished difference Result 4284 states and 6320 transitions. [2020-10-29 13:20:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:20:01,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-29 13:20:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:20:01,786 INFO L225 Difference]: With dead ends: 4284 [2020-10-29 13:20:01,787 INFO L226 Difference]: Without dead ends: 4277 [2020-10-29 13:20:01,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:20:01,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2020-10-29 13:20:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 1541. [2020-10-29 13:20:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-10-29 13:20:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2196 transitions. [2020-10-29 13:20:02,031 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2196 transitions. Word has length 68 [2020-10-29 13:20:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:20:02,032 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2196 transitions. [2020-10-29 13:20:02,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:20:02,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2196 transitions. [2020-10-29 13:20:02,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 13:20:02,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:20:02,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:20:02,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:20:02,035 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:20:02,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:20:02,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1809196865, now seen corresponding path program 1 times [2020-10-29 13:20:02,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:20:02,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646333851] [2020-10-29 13:20:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:20:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:02,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:02,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:02,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:03,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:03,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:03,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:03,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:05,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:05,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:05,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:06,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:06,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:06,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:06,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:07,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:07,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:07,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 13:20:07,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-29 13:20:07,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:20:07,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:07,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:20:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:20:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:20:07,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:07,590 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:20:07,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:20:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:07,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:07,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:07,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:20:07,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:20:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:20:07,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:07,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:20:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:20:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:20:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:07,621 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 13:20:07,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646333851] [2020-10-29 13:20:07,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:20:07,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:20:07,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500092603] [2020-10-29 13:20:07,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:20:07,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:20:07,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:20:07,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:20:07,624 INFO L87 Difference]: Start difference. First operand 1541 states and 2196 transitions. Second operand 8 states. [2020-10-29 13:20:08,128 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-29 13:20:10,257 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-29 13:20:10,786 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 13:20:13,315 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 13:20:13,800 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 13:20:14,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:20:14,397 INFO L93 Difference]: Finished difference Result 6099 states and 8972 transitions. [2020-10-29 13:20:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 13:20:14,398 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-29 13:20:14,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:20:14,418 INFO L225 Difference]: With dead ends: 6099 [2020-10-29 13:20:14,418 INFO L226 Difference]: Without dead ends: 5049 [2020-10-29 13:20:14,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2020-10-29 13:20:14,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5049 states. [2020-10-29 13:20:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5049 to 1415. [2020-10-29 13:20:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1415 states. [2020-10-29 13:20:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2010 transitions. [2020-10-29 13:20:14,674 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2010 transitions. Word has length 68 [2020-10-29 13:20:14,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:20:14,674 INFO L481 AbstractCegarLoop]: Abstraction has 1415 states and 2010 transitions. [2020-10-29 13:20:14,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:20:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2010 transitions. [2020-10-29 13:20:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 13:20:14,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:20:14,677 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] [2020-10-29 13:20:14,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:20:14,677 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:20:14,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:20:14,678 INFO L82 PathProgramCache]: Analyzing trace with hash 490316689, now seen corresponding path program 1 times [2020-10-29 13:20:14,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:20:14,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991665327] [2020-10-29 13:20:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:20:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:14,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:15,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:15,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:15,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:18,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:18,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 13:20:18,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:20:18,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3584 [2020-10-29 13:20:18,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:18,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:20:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:20:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 13:20:18,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:18,898 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:20:18,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:20:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:18,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:18,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:18,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:20:18,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:20:18,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:20:18,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:18,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:18,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:20:18,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:20:18,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:20:18,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:18,935 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 13:20:18,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991665327] [2020-10-29 13:20:18,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:20:18,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:20:18,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462889121] [2020-10-29 13:20:18,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:20:18,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:20:18,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:20:18,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:20:18,941 INFO L87 Difference]: Start difference. First operand 1415 states and 2010 transitions. Second operand 9 states. [2020-10-29 13:20:19,466 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2020-10-29 13:20:21,388 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-29 13:20:22,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:20:22,009 INFO L93 Difference]: Finished difference Result 3268 states and 4748 transitions. [2020-10-29 13:20:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:20:22,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-29 13:20:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:20:22,018 INFO L225 Difference]: With dead ends: 3268 [2020-10-29 13:20:22,018 INFO L226 Difference]: Without dead ends: 2444 [2020-10-29 13:20:22,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:20:22,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2020-10-29 13:20:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 1382. [2020-10-29 13:20:22,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2020-10-29 13:20:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1955 transitions. [2020-10-29 13:20:22,245 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1955 transitions. Word has length 68 [2020-10-29 13:20:22,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:20:22,245 INFO L481 AbstractCegarLoop]: Abstraction has 1382 states and 1955 transitions. [2020-10-29 13:20:22,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:20:22,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1955 transitions. [2020-10-29 13:20:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 13:20:22,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:20:22,248 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] [2020-10-29 13:20:22,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:20:22,248 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:20:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:20:22,249 INFO L82 PathProgramCache]: Analyzing trace with hash -877870284, now seen corresponding path program 1 times [2020-10-29 13:20:22,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:20:22,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963282335] [2020-10-29 13:20:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:20:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:22,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:22,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:22,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:22,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:23,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:23,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:23,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:24,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:25,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:25,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:27,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:27,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 13:20:27,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:20:27,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:20:27,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:27,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:27,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:20:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 13:20:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 13:20:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:27,769 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:20:27,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:20:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:27,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:27,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:27,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:20:27,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:20:27,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:20:27,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:27,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:20:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:20:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:20:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:27,797 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 13:20:27,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963282335] [2020-10-29 13:20:27,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:20:27,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:20:27,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572579965] [2020-10-29 13:20:27,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:20:27,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:20:27,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:20:27,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:20:27,799 INFO L87 Difference]: Start difference. First operand 1382 states and 1955 transitions. Second operand 6 states. [2020-10-29 13:20:28,284 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 13:20:30,140 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 13:20:30,688 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-29 13:20:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:20:32,030 INFO L93 Difference]: Finished difference Result 2049 states and 2934 transitions. [2020-10-29 13:20:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:20:32,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-29 13:20:32,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:20:32,041 INFO L225 Difference]: With dead ends: 2049 [2020-10-29 13:20:32,041 INFO L226 Difference]: Without dead ends: 1821 [2020-10-29 13:20:32,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:20:32,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2020-10-29 13:20:32,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1364. [2020-10-29 13:20:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1364 states. [2020-10-29 13:20:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1928 transitions. [2020-10-29 13:20:32,294 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1928 transitions. Word has length 68 [2020-10-29 13:20:32,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:20:32,294 INFO L481 AbstractCegarLoop]: Abstraction has 1364 states and 1928 transitions. [2020-10-29 13:20:32,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:20:32,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1928 transitions. [2020-10-29 13:20:32,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 13:20:32,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:20:32,297 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] [2020-10-29 13:20:32,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:20:32,298 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:20:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:20:32,298 INFO L82 PathProgramCache]: Analyzing trace with hash -849668736, now seen corresponding path program 1 times [2020-10-29 13:20:32,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:20:32,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966555286] [2020-10-29 13:20:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:20:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:32,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:32,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:33,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:33,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:33,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:35,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:36,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:37,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:37,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 13:20:37,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:20:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:20:37,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:37,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:20:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:20:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 13:20:37,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:37,884 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:20:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:20:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:37,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:37,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:20:37,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:20:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:20:37,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:37,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:20:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:20:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:20:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:37,917 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 13:20:37,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966555286] [2020-10-29 13:20:37,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:20:37,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:20:37,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584470408] [2020-10-29 13:20:37,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:20:37,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:20:37,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:20:37,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:20:37,919 INFO L87 Difference]: Start difference. First operand 1364 states and 1928 transitions. Second operand 8 states. [2020-10-29 13:20:38,470 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-29 13:20:40,316 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 13:20:41,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:20:41,604 INFO L93 Difference]: Finished difference Result 3683 states and 5344 transitions. [2020-10-29 13:20:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:20:41,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-29 13:20:41,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:20:41,617 INFO L225 Difference]: With dead ends: 3683 [2020-10-29 13:20:41,617 INFO L226 Difference]: Without dead ends: 3261 [2020-10-29 13:20:41,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:20:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2020-10-29 13:20:41,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 1364. [2020-10-29 13:20:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1364 states. [2020-10-29 13:20:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1924 transitions. [2020-10-29 13:20:41,836 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1924 transitions. Word has length 68 [2020-10-29 13:20:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:20:41,837 INFO L481 AbstractCegarLoop]: Abstraction has 1364 states and 1924 transitions. [2020-10-29 13:20:41,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:20:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1924 transitions. [2020-10-29 13:20:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 13:20:41,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:20:41,839 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] [2020-10-29 13:20:41,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:20:41,839 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:20:41,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:20:41,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1175358047, now seen corresponding path program 1 times [2020-10-29 13:20:41,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:20:41,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587490519] [2020-10-29 13:20:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:20:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:41,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:41,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:42,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:42,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:45,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:45,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 13:20:45,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:20:45,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3417 [2020-10-29 13:20:45,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:45,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:20:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:20:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 13:20:45,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:45,801 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:20:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:20:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:45,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:45,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:45,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:20:45,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:20:45,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:20:45,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:45,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:20:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:20:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:20:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:45,838 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 13:20:45,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587490519] [2020-10-29 13:20:45,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:20:45,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:20:45,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343907458] [2020-10-29 13:20:45,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:20:45,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:20:45,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:20:45,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:20:45,841 INFO L87 Difference]: Start difference. First operand 1364 states and 1924 transitions. Second operand 8 states. [2020-10-29 13:20:46,357 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 13:20:47,688 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 13:20:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:20:48,347 INFO L93 Difference]: Finished difference Result 2687 states and 3875 transitions. [2020-10-29 13:20:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:20:48,348 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-29 13:20:48,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:20:48,352 INFO L225 Difference]: With dead ends: 2687 [2020-10-29 13:20:48,352 INFO L226 Difference]: Without dead ends: 2146 [2020-10-29 13:20:48,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:20:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2020-10-29 13:20:48,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1232. [2020-10-29 13:20:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2020-10-29 13:20:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1739 transitions. [2020-10-29 13:20:48,570 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1739 transitions. Word has length 68 [2020-10-29 13:20:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:20:48,571 INFO L481 AbstractCegarLoop]: Abstraction has 1232 states and 1739 transitions. [2020-10-29 13:20:48,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:20:48,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1739 transitions. [2020-10-29 13:20:48,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:20:48,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:20:48,573 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] [2020-10-29 13:20:48,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:20:48,573 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:20:48,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:20:48,573 INFO L82 PathProgramCache]: Analyzing trace with hash -299184518, now seen corresponding path program 1 times [2020-10-29 13:20:48,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:20:48,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121255094] [2020-10-29 13:20:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:20:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:48,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:48,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:48,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:49,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:49,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:50,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:50,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:51,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:53,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:53,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:20:53,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:20:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:20:53,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:53,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:20:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:20:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:20:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:54,116 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:20:54,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:20:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:54,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:54,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:54,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:20:54,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:20:54,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:20:54,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:54,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:20:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:20:54,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:20:54,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:20:54,148 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 13:20:54,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121255094] [2020-10-29 13:20:54,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:20:54,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:20:54,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461335960] [2020-10-29 13:20:54,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:20:54,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:20:54,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:20:54,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:20:54,150 INFO L87 Difference]: Start difference. First operand 1232 states and 1739 transitions. Second operand 8 states. [2020-10-29 13:20:54,667 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-29 13:20:56,005 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 13:20:56,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:20:56,653 INFO L93 Difference]: Finished difference Result 2255 states and 3207 transitions. [2020-10-29 13:20:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:20:56,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-29 13:20:56,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:20:56,657 INFO L225 Difference]: With dead ends: 2255 [2020-10-29 13:20:56,658 INFO L226 Difference]: Without dead ends: 2247 [2020-10-29 13:20:56,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:20:56,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2020-10-29 13:20:56,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 1232. [2020-10-29 13:20:56,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2020-10-29 13:20:56,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1738 transitions. [2020-10-29 13:20:56,916 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1738 transitions. Word has length 69 [2020-10-29 13:20:56,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:20:56,916 INFO L481 AbstractCegarLoop]: Abstraction has 1232 states and 1738 transitions. [2020-10-29 13:20:56,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:20:56,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1738 transitions. [2020-10-29 13:20:56,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:20:56,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:20:56,918 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] [2020-10-29 13:20:56,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:20:56,918 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:20:56,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:20:56,919 INFO L82 PathProgramCache]: Analyzing trace with hash -400388165, now seen corresponding path program 1 times [2020-10-29 13:20:56,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:20:56,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555739124] [2020-10-29 13:20:56,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:20:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:57,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:57,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:00,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:01,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:01,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:01,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:21:01,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:21:01,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:21:01,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:01,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:01,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:21:01,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:21:01,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 13:21:01,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:02,434 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:21:02,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:02,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:02,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:02,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:02,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:21:02,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:02,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:02,469 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 13:21:02,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555739124] [2020-10-29 13:21:02,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:02,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:21:02,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974274620] [2020-10-29 13:21:02,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:21:02,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:02,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:21:02,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:21:02,471 INFO L87 Difference]: Start difference. First operand 1232 states and 1738 transitions. Second operand 8 states. [2020-10-29 13:21:02,995 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-29 13:21:04,320 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 13:21:05,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:05,551 INFO L93 Difference]: Finished difference Result 3083 states and 4454 transitions. [2020-10-29 13:21:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:21:05,552 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-29 13:21:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:05,557 INFO L225 Difference]: With dead ends: 3083 [2020-10-29 13:21:05,557 INFO L226 Difference]: Without dead ends: 3077 [2020-10-29 13:21:05,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:21:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2020-10-29 13:21:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1232. [2020-10-29 13:21:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2020-10-29 13:21:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1736 transitions. [2020-10-29 13:21:05,814 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1736 transitions. Word has length 69 [2020-10-29 13:21:05,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:05,814 INFO L481 AbstractCegarLoop]: Abstraction has 1232 states and 1736 transitions. [2020-10-29 13:21:05,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:21:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1736 transitions. [2020-10-29 13:21:05,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:21:05,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:05,818 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] [2020-10-29 13:21:05,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:21:05,818 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:05,819 INFO L82 PathProgramCache]: Analyzing trace with hash 548021662, now seen corresponding path program 1 times [2020-10-29 13:21:05,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:05,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338171225] [2020-10-29 13:21:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:05,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:06,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:06,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:08,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:08,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:10,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:10,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:21:10,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:21:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:21:10,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:10,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:21:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:21:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 13:21:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:11,362 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:21:11,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:11,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:11,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:11,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:11,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:21:11,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:11,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:11,398 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 13:21:11,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338171225] [2020-10-29 13:21:11,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:11,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:21:11,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406747622] [2020-10-29 13:21:11,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:21:11,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:11,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:21:11,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:21:11,400 INFO L87 Difference]: Start difference. First operand 1232 states and 1736 transitions. Second operand 8 states. [2020-10-29 13:21:11,906 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-29 13:21:13,363 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 13:21:14,873 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-29 13:21:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:15,004 INFO L93 Difference]: Finished difference Result 2076 states and 2997 transitions. [2020-10-29 13:21:15,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:21:15,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-29 13:21:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:15,008 INFO L225 Difference]: With dead ends: 2076 [2020-10-29 13:21:15,009 INFO L226 Difference]: Without dead ends: 1656 [2020-10-29 13:21:15,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-29 13:21:15,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2020-10-29 13:21:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1232. [2020-10-29 13:21:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2020-10-29 13:21:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1730 transitions. [2020-10-29 13:21:15,264 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1730 transitions. Word has length 69 [2020-10-29 13:21:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:15,264 INFO L481 AbstractCegarLoop]: Abstraction has 1232 states and 1730 transitions. [2020-10-29 13:21:15,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:21:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1730 transitions. [2020-10-29 13:21:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:21:15,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:15,266 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] [2020-10-29 13:21:15,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 13:21:15,267 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:15,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:15,267 INFO L82 PathProgramCache]: Analyzing trace with hash 738832675, now seen corresponding path program 1 times [2020-10-29 13:21:15,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:15,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460681108] [2020-10-29 13:21:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:15,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:15,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:16,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:16,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:21:16,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:21:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 955 [2020-10-29 13:21:16,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:16,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:21:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:21:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 13:21:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:16,795 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:21:16,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:16,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:16,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:16,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:16,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:21:16,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:16,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:16,840 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 13:21:16,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460681108] [2020-10-29 13:21:16,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:16,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:21:16,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660985886] [2020-10-29 13:21:16,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:21:16,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:16,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:21:16,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:21:16,842 INFO L87 Difference]: Start difference. First operand 1232 states and 1730 transitions. Second operand 9 states. [2020-10-29 13:21:17,360 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-29 13:21:18,954 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 13:21:20,281 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 13:21:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:20,370 INFO L93 Difference]: Finished difference Result 2319 states and 3343 transitions. [2020-10-29 13:21:20,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:21:20,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-29 13:21:20,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:20,375 INFO L225 Difference]: With dead ends: 2319 [2020-10-29 13:21:20,375 INFO L226 Difference]: Without dead ends: 2306 [2020-10-29 13:21:20,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:21:20,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2020-10-29 13:21:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1221. [2020-10-29 13:21:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1221 states. [2020-10-29 13:21:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1712 transitions. [2020-10-29 13:21:20,559 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1712 transitions. Word has length 71 [2020-10-29 13:21:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:20,559 INFO L481 AbstractCegarLoop]: Abstraction has 1221 states and 1712 transitions. [2020-10-29 13:21:20,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:21:20,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1712 transitions. [2020-10-29 13:21:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:21:20,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:20,561 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] [2020-10-29 13:21:20,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 13:21:20,561 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:20,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:20,561 INFO L82 PathProgramCache]: Analyzing trace with hash 851103745, now seen corresponding path program 1 times [2020-10-29 13:21:20,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:20,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184611043] [2020-10-29 13:21:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:20,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:20,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:21,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:22,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:24,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:24,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:21:24,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:21:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3565 [2020-10-29 13:21:24,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:24,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:21:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:21:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 13:21:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:24,776 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:21:24,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:24,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:24,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:24,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:24,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:21:24,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:24,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:24,812 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 13:21:24,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184611043] [2020-10-29 13:21:24,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:24,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:21:24,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475906465] [2020-10-29 13:21:24,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:21:24,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:24,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:21:24,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:21:24,814 INFO L87 Difference]: Start difference. First operand 1221 states and 1712 transitions. Second operand 9 states. [2020-10-29 13:21:25,442 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-29 13:21:28,470 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-29 13:21:29,070 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-29 13:21:29,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:29,132 INFO L93 Difference]: Finished difference Result 1634 states and 2329 transitions. [2020-10-29 13:21:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:21:29,133 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-29 13:21:29,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:29,136 INFO L225 Difference]: With dead ends: 1634 [2020-10-29 13:21:29,137 INFO L226 Difference]: Without dead ends: 1388 [2020-10-29 13:21:29,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:21:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2020-10-29 13:21:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1182. [2020-10-29 13:21:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2020-10-29 13:21:29,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1660 transitions. [2020-10-29 13:21:29,413 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1660 transitions. Word has length 71 [2020-10-29 13:21:29,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:29,414 INFO L481 AbstractCegarLoop]: Abstraction has 1182 states and 1660 transitions. [2020-10-29 13:21:29,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:21:29,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1660 transitions. [2020-10-29 13:21:29,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 13:21:29,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:29,417 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] [2020-10-29 13:21:29,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 13:21:29,418 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:29,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:29,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1531392111, now seen corresponding path program 1 times [2020-10-29 13:21:29,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:29,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024952577] [2020-10-29 13:21:29,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:29,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:29,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:29,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:29,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:30,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:30,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:31,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:31,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:34,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:34,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 13:21:34,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:21:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:21:34,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:34,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:21:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:21:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 13:21:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:34,966 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:21:34,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:34,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:34,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:34,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:34,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:21:34,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:34,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:34,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:34,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:34,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:34,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:35,005 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 13:21:35,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024952577] [2020-10-29 13:21:35,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:35,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:21:35,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205706926] [2020-10-29 13:21:35,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:21:35,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:35,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:21:35,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:21:35,006 INFO L87 Difference]: Start difference. First operand 1182 states and 1660 transitions. Second operand 7 states. [2020-10-29 13:21:35,542 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 13:21:37,336 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-29 13:21:37,831 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-29 13:21:38,306 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-29 13:21:38,927 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-29 13:21:39,421 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-29 13:21:39,895 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:21:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:40,512 INFO L93 Difference]: Finished difference Result 7670 states and 11468 transitions. [2020-10-29 13:21:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:21:40,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-29 13:21:40,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:40,522 INFO L225 Difference]: With dead ends: 7670 [2020-10-29 13:21:40,522 INFO L226 Difference]: Without dead ends: 6859 [2020-10-29 13:21:40,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:21:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6859 states. [2020-10-29 13:21:41,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6859 to 1990. [2020-10-29 13:21:41,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2020-10-29 13:21:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2852 transitions. [2020-10-29 13:21:41,049 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2852 transitions. Word has length 91 [2020-10-29 13:21:41,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:41,049 INFO L481 AbstractCegarLoop]: Abstraction has 1990 states and 2852 transitions. [2020-10-29 13:21:41,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:21:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2852 transitions. [2020-10-29 13:21:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 13:21:41,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:41,054 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] [2020-10-29 13:21:41,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 13:21:41,054 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:41,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:41,055 INFO L82 PathProgramCache]: Analyzing trace with hash 36022641, now seen corresponding path program 1 times [2020-10-29 13:21:41,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:41,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368871110] [2020-10-29 13:21:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:41,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:41,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:41,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:42,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:46,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:46,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 13:21:46,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:21:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:21:46,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:46,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:21:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 13:21:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 13:21:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:46,563 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:21:46,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:46,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:46,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:46,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:46,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:46,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:21:46,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:46,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:46,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:46,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:46,595 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 13:21:46,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368871110] [2020-10-29 13:21:46,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:46,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:21:46,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357433152] [2020-10-29 13:21:46,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:21:46,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:46,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:21:46,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:21:46,597 INFO L87 Difference]: Start difference. First operand 1990 states and 2852 transitions. Second operand 6 states. [2020-10-29 13:21:47,097 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 13:21:49,343 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-29 13:21:49,798 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 13:21:50,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:50,190 INFO L93 Difference]: Finished difference Result 4194 states and 6108 transitions. [2020-10-29 13:21:50,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:21:50,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-29 13:21:50,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:50,194 INFO L225 Difference]: With dead ends: 4194 [2020-10-29 13:21:50,194 INFO L226 Difference]: Without dead ends: 3387 [2020-10-29 13:21:50,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:21:50,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2020-10-29 13:21:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 1990. [2020-10-29 13:21:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2020-10-29 13:21:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2836 transitions. [2020-10-29 13:21:50,691 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2836 transitions. Word has length 93 [2020-10-29 13:21:50,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:50,691 INFO L481 AbstractCegarLoop]: Abstraction has 1990 states and 2836 transitions. [2020-10-29 13:21:50,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:21:50,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2836 transitions. [2020-10-29 13:21:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 13:21:50,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:50,695 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] [2020-10-29 13:21:50,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 13:21:50,696 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:50,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1740729294, now seen corresponding path program 1 times [2020-10-29 13:21:50,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:50,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771059748] [2020-10-29 13:21:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:52,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:52,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:55,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:55,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 13:21:55,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:21:55,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:21:55,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:55,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:21:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 13:21:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 13:21:55,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:56,224 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:21:56,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:56,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:56,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:56,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:56,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:56,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:21:56,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:56,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:56,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:56,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:56,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:56,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:56,259 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 13:21:56,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771059748] [2020-10-29 13:21:56,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:56,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:21:56,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383303652] [2020-10-29 13:21:56,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:21:56,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:56,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:21:56,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:21:56,260 INFO L87 Difference]: Start difference. First operand 1990 states and 2836 transitions. Second operand 4 states. [2020-10-29 13:21:56,740 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:21:57,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:57,843 INFO L93 Difference]: Finished difference Result 3612 states and 5240 transitions. [2020-10-29 13:21:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:21:57,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2020-10-29 13:21:57,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:57,847 INFO L225 Difference]: With dead ends: 3612 [2020-10-29 13:21:57,848 INFO L226 Difference]: Without dead ends: 1993 [2020-10-29 13:21:57,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:21:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-10-29 13:21:58,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1990. [2020-10-29 13:21:58,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2020-10-29 13:21:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2820 transitions. [2020-10-29 13:21:58,341 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2820 transitions. Word has length 93 [2020-10-29 13:21:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:58,341 INFO L481 AbstractCegarLoop]: Abstraction has 1990 states and 2820 transitions. [2020-10-29 13:21:58,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:21:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2820 transitions. [2020-10-29 13:21:58,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 13:21:58,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:58,345 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] [2020-10-29 13:21:58,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 13:21:58,346 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:58,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:58,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1199748655, now seen corresponding path program 1 times [2020-10-29 13:21:58,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:58,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925085189] [2020-10-29 13:21:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:58,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:58,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:58,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:58,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:58,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:58,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:59,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:00,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:22:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 13:22:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:22:03,947 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:22:03,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:22:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:03,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:03,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:03,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:22:03,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:22:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:22:03,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:03,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:22:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:22:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:22:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:22:03,988 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 13:22:03,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925085189] [2020-10-29 13:22:03,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:22:03,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:22:03,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180090513] [2020-10-29 13:22:03,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:22:03,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:22:03,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:22:03,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:22:03,989 INFO L87 Difference]: Start difference. First operand 1990 states and 2820 transitions. Second operand 8 states. [2020-10-29 13:22:04,538 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-29 13:22:06,717 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-29 13:22:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:22:06,871 INFO L93 Difference]: Finished difference Result 5520 states and 7908 transitions. [2020-10-29 13:22:06,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 13:22:06,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-10-29 13:22:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:22:06,875 INFO L225 Difference]: With dead ends: 5520 [2020-10-29 13:22:06,875 INFO L226 Difference]: Without dead ends: 3829 [2020-10-29 13:22:06,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:22:06,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2020-10-29 13:22:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 1990. [2020-10-29 13:22:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2020-10-29 13:22:07,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2808 transitions. [2020-10-29 13:22:07,235 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2808 transitions. Word has length 93 [2020-10-29 13:22:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:22:07,235 INFO L481 AbstractCegarLoop]: Abstraction has 1990 states and 2808 transitions. [2020-10-29 13:22:07,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:22:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2808 transitions. [2020-10-29 13:22:07,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:22:07,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:22:07,238 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] [2020-10-29 13:22:07,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 13:22:07,239 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:22:07,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:22:07,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1257237706, now seen corresponding path program 1 times [2020-10-29 13:22:07,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:22:07,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951742006] [2020-10-29 13:22:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:22:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:07,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:07,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:07,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking...