/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:30:50,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:30:50,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:30:50,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:30:50,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:30:50,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:30:50,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:30:50,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:30:50,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:30:50,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:30:50,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:30:50,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:30:50,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:30:50,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:30:50,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:30:50,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:30:50,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:30:50,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:30:50,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:30:50,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:30:50,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:30:50,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:30:50,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:30:50,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:30:50,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:30:50,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:30:50,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:30:50,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:30:50,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:30:50,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:30:50,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:30:50,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:30:50,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:30:50,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:30:50,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:30:50,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:30:50,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:30:50,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:30:50,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:30:50,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:30:50,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:30:50,149 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 [2020-10-15 03:30:50,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:30:50,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:30:50,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:30:50,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:30:50,188 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:30:50,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:30:50,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:30:50,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:30:50,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:30:50,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:30:50,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:30:50,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:30:50,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:30:50,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:30:50,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:30:50,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:30:50,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:30:50,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:30:50,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:30:50,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:30:50,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:30:50,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:30:50,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:30:50,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:30:50,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:30:50,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:30:50,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:30:50,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:30:50,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:30:50,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:30:50,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:30:50,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:30:50,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:30:50,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:30:50,534 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:30:50,535 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-15 03:30:50,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/599556cc2/7214138b593e48ed97a57e6433dbb298/FLAG4be7404ed [2020-10-15 03:30:51,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:30:51,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-15 03:30:51,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/599556cc2/7214138b593e48ed97a57e6433dbb298/FLAG4be7404ed [2020-10-15 03:30:51,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/599556cc2/7214138b593e48ed97a57e6433dbb298 [2020-10-15 03:30:51,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:30:51,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:30:51,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:30:51,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:30:51,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:30:51,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:51" (1/1) ... [2020-10-15 03:30:51,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27005f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:51, skipping insertion in model container [2020-10-15 03:30:51,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:51" (1/1) ... [2020-10-15 03:30:51,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:30:51,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:30:52,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:30:52,021 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:30:52,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:30:52,194 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:30:52,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:52 WrapperNode [2020-10-15 03:30:52,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:30:52,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:30:52,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:30:52,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:30:52,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:52" (1/1) ... [2020-10-15 03:30:52,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:52" (1/1) ... [2020-10-15 03:30:52,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:52" (1/1) ... [2020-10-15 03:30:52,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:52" (1/1) ... [2020-10-15 03:30:52,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:52" (1/1) ... [2020-10-15 03:30:52,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:52" (1/1) ... [2020-10-15 03:30:52,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:52" (1/1) ... [2020-10-15 03:30:52,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:30:52,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:30:52,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:30:52,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:30:52,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:52" (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 [2020-10-15 03:30:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:30:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:30:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:30:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:30:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:30:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:30:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:30:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:30:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:30:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:30:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:30:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:30:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:30:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:30:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:30:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:30:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:30:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:30:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:30:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:30:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:30:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:30:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:30:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:30:53,712 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:30:53,712 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:30:53,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:53 BoogieIcfgContainer [2020-10-15 03:30:53,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:30:53,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:30:53,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:30:53,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:30:53,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:30:51" (1/3) ... [2020-10-15 03:30:53,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fd35d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:53, skipping insertion in model container [2020-10-15 03:30:53,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:52" (2/3) ... [2020-10-15 03:30:53,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fd35d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:53, skipping insertion in model container [2020-10-15 03:30:53,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:53" (3/3) ... [2020-10-15 03:30:53,730 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-15 03:30:53,740 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:30:53,759 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:30:53,772 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:30:53,798 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:30:53,798 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:30:53,798 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:30:53,798 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:30:53,799 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:30:53,799 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:30:53,799 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:30:53,799 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:30:53,821 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-15 03:30:53,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-15 03:30:53,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:53,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:30:53,840 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:53,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:53,845 INFO L82 PathProgramCache]: Analyzing trace with hash 870041976, now seen corresponding path program 1 times [2020-10-15 03:30:53,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:53,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158705746] [2020-10-15 03:30:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:54,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:54,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:54,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:54,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:55,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:55,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:55,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:59,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:59,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-15 03:30:59,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:30:59,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-15 03:30:59,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:59,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:30:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:30:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:30:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:30:59,570 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:30:59,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:59,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:59,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:59,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:30:59,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:59,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:30:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:59,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158705746] [2020-10-15 03:30:59,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:59,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:30:59,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354695841] [2020-10-15 03:30:59,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:30:59,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:59,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:30:59,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:30:59,751 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 4 states. [2020-10-15 03:31:01,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:01,703 INFO L93 Difference]: Finished difference Result 808 states and 1303 transitions. [2020-10-15 03:31:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:31:01,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-15 03:31:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:01,739 INFO L225 Difference]: With dead ends: 808 [2020-10-15 03:31:01,739 INFO L226 Difference]: Without dead ends: 594 [2020-10-15 03:31:01,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:31:01,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-10-15 03:31:01,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 592. [2020-10-15 03:31:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-10-15 03:31:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 956 transitions. [2020-10-15 03:31:01,917 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 956 transitions. Word has length 123 [2020-10-15 03:31:01,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:01,918 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 956 transitions. [2020-10-15 03:31:01,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:31:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 956 transitions. [2020-10-15 03:31:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-15 03:31:01,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:01,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:01,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:31:01,936 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:01,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:01,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2078435800, now seen corresponding path program 1 times [2020-10-15 03:31:01,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:01,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776262002] [2020-10-15 03:31:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:02,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:06,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:06,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-15 03:31:07,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:31:07,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:31:07,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:07,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:31:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 03:31:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:31:07,297 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:31:07,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:07,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:07,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:07,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:31:07,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:07,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:31:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:31:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:07,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776262002] [2020-10-15 03:31:07,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:07,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:31:07,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621010717] [2020-10-15 03:31:07,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:31:07,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:07,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:31:07,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:31:07,361 INFO L87 Difference]: Start difference. First operand 592 states and 956 transitions. Second operand 4 states. [2020-10-15 03:31:09,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:09,181 INFO L93 Difference]: Finished difference Result 1437 states and 2309 transitions. [2020-10-15 03:31:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:31:09,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-15 03:31:09,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:09,188 INFO L225 Difference]: With dead ends: 1437 [2020-10-15 03:31:09,189 INFO L226 Difference]: Without dead ends: 1036 [2020-10-15 03:31:09,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:31:09,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-10-15 03:31:09,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1004. [2020-10-15 03:31:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-10-15 03:31:09,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1614 transitions. [2020-10-15 03:31:09,235 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1614 transitions. Word has length 123 [2020-10-15 03:31:09,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:09,235 INFO L479 AbstractCegarLoop]: Abstraction has 1004 states and 1614 transitions. [2020-10-15 03:31:09,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:31:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1614 transitions. [2020-10-15 03:31:09,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 03:31:09,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:09,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:09,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:31:09,240 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:09,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:09,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2049660935, now seen corresponding path program 1 times [2020-10-15 03:31:09,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:09,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328317795] [2020-10-15 03:31:09,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:09,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:09,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:09,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:09,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:09,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:09,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:10,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:12,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:12,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:14,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:14,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 03:31:14,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:31:14,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:31:14,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:14,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:31:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 03:31:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:14,590 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:31:14,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:14,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:14,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:14,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:14,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:31:14,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:14,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:31:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:31:14,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:14,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328317795] [2020-10-15 03:31:14,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:14,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:31:14,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578394126] [2020-10-15 03:31:14,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:31:14,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:14,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:31:14,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:31:14,643 INFO L87 Difference]: Start difference. First operand 1004 states and 1614 transitions. Second operand 4 states. [2020-10-15 03:31:14,829 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-15 03:31:16,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:16,900 INFO L93 Difference]: Finished difference Result 2593 states and 4147 transitions. [2020-10-15 03:31:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:31:16,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-15 03:31:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:16,916 INFO L225 Difference]: With dead ends: 2593 [2020-10-15 03:31:16,917 INFO L226 Difference]: Without dead ends: 1869 [2020-10-15 03:31:16,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:31:16,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2020-10-15 03:31:17,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1819. [2020-10-15 03:31:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1819 states. [2020-10-15 03:31:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2903 transitions. [2020-10-15 03:31:17,054 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2903 transitions. Word has length 125 [2020-10-15 03:31:17,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:17,056 INFO L479 AbstractCegarLoop]: Abstraction has 1819 states and 2903 transitions. [2020-10-15 03:31:17,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:31:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2903 transitions. [2020-10-15 03:31:17,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 03:31:17,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:17,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:17,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:31:17,072 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:17,073 INFO L82 PathProgramCache]: Analyzing trace with hash -278713513, now seen corresponding path program 1 times [2020-10-15 03:31:17,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:17,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896699523] [2020-10-15 03:31:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:17,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:17,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:17,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:17,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:17,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:18,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:22,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:22,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 03:31:22,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:31:22,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:31:22,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:22,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 03:31:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 03:31:22,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:22,376 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:31:22,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:22,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:22,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:22,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:31:22,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:22,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:31:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:31:22,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:22,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896699523] [2020-10-15 03:31:22,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:22,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:31:22,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750033520] [2020-10-15 03:31:22,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:31:22,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:22,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:31:22,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:31:22,459 INFO L87 Difference]: Start difference. First operand 1819 states and 2903 transitions. Second operand 4 states. [2020-10-15 03:31:22,735 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-15 03:31:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:24,622 INFO L93 Difference]: Finished difference Result 4413 states and 7015 transitions. [2020-10-15 03:31:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:31:24,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-15 03:31:24,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:24,639 INFO L225 Difference]: With dead ends: 4413 [2020-10-15 03:31:24,640 INFO L226 Difference]: Without dead ends: 3271 [2020-10-15 03:31:24,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:31:24,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2020-10-15 03:31:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3173. [2020-10-15 03:31:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3173 states. [2020-10-15 03:31:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 5025 transitions. [2020-10-15 03:31:24,801 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 5025 transitions. Word has length 127 [2020-10-15 03:31:24,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:24,803 INFO L479 AbstractCegarLoop]: Abstraction has 3173 states and 5025 transitions. [2020-10-15 03:31:24,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:31:24,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 5025 transitions. [2020-10-15 03:31:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-15 03:31:24,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:24,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:24,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:31:24,815 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:24,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1915147068, now seen corresponding path program 1 times [2020-10-15 03:31:24,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:24,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246122394] [2020-10-15 03:31:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:25,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:25,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:25,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:29,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:29,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-15 03:31:29,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:31:29,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 03:31:29,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:29,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 03:31:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:31:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:30,084 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:31:30,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:30,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:30,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:30,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:30,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:30,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:31:30,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:30,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:31:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:31:30,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:30,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246122394] [2020-10-15 03:31:30,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:30,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:31:30,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778759462] [2020-10-15 03:31:30,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:31:30,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:30,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:31:30,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:31:30,146 INFO L87 Difference]: Start difference. First operand 3173 states and 5025 transitions. Second operand 4 states. [2020-10-15 03:31:30,390 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 03:31:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:32,141 INFO L93 Difference]: Finished difference Result 7757 states and 12239 transitions. [2020-10-15 03:31:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:31:32,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-15 03:31:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:32,169 INFO L225 Difference]: With dead ends: 7757 [2020-10-15 03:31:32,169 INFO L226 Difference]: Without dead ends: 5763 [2020-10-15 03:31:32,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:31:32,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5763 states. [2020-10-15 03:31:32,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5763 to 5569. [2020-10-15 03:31:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5569 states. [2020-10-15 03:31:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 8741 transitions. [2020-10-15 03:31:32,485 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 8741 transitions. Word has length 129 [2020-10-15 03:31:32,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:32,485 INFO L479 AbstractCegarLoop]: Abstraction has 5569 states and 8741 transitions. [2020-10-15 03:31:32,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:31:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 8741 transitions. [2020-10-15 03:31:32,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 03:31:32,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:32,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:32,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:31:32,507 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:32,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1176348536, now seen corresponding path program 1 times [2020-10-15 03:31:32,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:32,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271856190] [2020-10-15 03:31:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:32,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:32,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:32,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:32,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:32,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:32,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:35,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:37,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:37,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-15 03:31:37,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:31:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 03:31:37,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:37,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-15 03:31:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:31:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:37,802 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:31:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:37,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:37,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:37,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:37,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:31:37,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:37,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:31:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:31:37,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:37,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271856190] [2020-10-15 03:31:37,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:37,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:31:37,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425516475] [2020-10-15 03:31:37,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:31:37,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:37,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:31:37,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:31:37,842 INFO L87 Difference]: Start difference. First operand 5569 states and 8741 transitions. Second operand 4 states. [2020-10-15 03:31:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:39,700 INFO L93 Difference]: Finished difference Result 13221 states and 20707 transitions. [2020-10-15 03:31:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:31:39,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-15 03:31:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:39,751 INFO L225 Difference]: With dead ends: 13221 [2020-10-15 03:31:39,752 INFO L226 Difference]: Without dead ends: 10143 [2020-10-15 03:31:39,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:31:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10143 states. [2020-10-15 03:31:40,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10143 to 10141. [2020-10-15 03:31:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10141 states. [2020-10-15 03:31:40,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10141 states to 10141 states and 15837 transitions. [2020-10-15 03:31:40,297 INFO L78 Accepts]: Start accepts. Automaton has 10141 states and 15837 transitions. Word has length 131 [2020-10-15 03:31:40,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:40,299 INFO L479 AbstractCegarLoop]: Abstraction has 10141 states and 15837 transitions. [2020-10-15 03:31:40,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:31:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 10141 states and 15837 transitions. [2020-10-15 03:31:40,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 03:31:40,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:40,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:40,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:31:40,330 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:40,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:40,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2039707683, now seen corresponding path program 1 times [2020-10-15 03:31:40,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:40,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278678257] [2020-10-15 03:31:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:40,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:42,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:45,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:45,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-15 03:31:45,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:31:45,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:31:45,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:45,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-15 03:31:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 03:31:45,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:45,631 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:31:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:45,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:45,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:45,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:45,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:45,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:31:45,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:45,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:31:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:45,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:31:45,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:45,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:45,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278678257] [2020-10-15 03:31:45,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:45,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:31:45,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697356089] [2020-10-15 03:31:45,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:31:45,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:45,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:31:45,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:31:45,716 INFO L87 Difference]: Start difference. First operand 10141 states and 15837 transitions. Second operand 4 states. [2020-10-15 03:31:45,920 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-15 03:31:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:47,637 INFO L93 Difference]: Finished difference Result 27989 states and 43567 transitions. [2020-10-15 03:31:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:31:47,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-15 03:31:47,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:47,694 INFO L225 Difference]: With dead ends: 27989 [2020-10-15 03:31:47,694 INFO L226 Difference]: Without dead ends: 19427 [2020-10-15 03:31:47,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:31:47,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19427 states. [2020-10-15 03:31:48,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19427 to 18721. [2020-10-15 03:31:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18721 states. [2020-10-15 03:31:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18721 states to 18721 states and 28957 transitions. [2020-10-15 03:31:48,588 INFO L78 Accepts]: Start accepts. Automaton has 18721 states and 28957 transitions. Word has length 131 [2020-10-15 03:31:48,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:48,589 INFO L479 AbstractCegarLoop]: Abstraction has 18721 states and 28957 transitions. [2020-10-15 03:31:48,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:31:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 18721 states and 28957 transitions. [2020-10-15 03:31:48,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-15 03:31:48,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:48,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:48,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:31:48,635 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:48,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:48,635 INFO L82 PathProgramCache]: Analyzing trace with hash -788961521, now seen corresponding path program 1 times [2020-10-15 03:31:48,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:48,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596183178] [2020-10-15 03:31:48,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:48,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:53,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:53,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-15 03:31:53,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:31:53,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:31:53,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:53,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 03:31:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:31:53,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:53,937 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:31:53,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:53,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:53,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:53,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:53,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:53,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:31:53,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:53,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:53,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:31:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:31:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:54,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596183178] [2020-10-15 03:31:54,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:54,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:31:54,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829596151] [2020-10-15 03:31:54,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:31:54,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:54,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:31:54,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:31:54,025 INFO L87 Difference]: Start difference. First operand 18721 states and 28957 transitions. Second operand 4 states. [2020-10-15 03:31:54,450 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-15 03:31:57,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:57,264 INFO L93 Difference]: Finished difference Result 50901 states and 78431 transitions. [2020-10-15 03:31:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:31:57,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-15 03:31:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:57,347 INFO L225 Difference]: With dead ends: 50901 [2020-10-15 03:31:57,347 INFO L226 Difference]: Without dead ends: 35763 [2020-10-15 03:31:57,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:31:57,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35763 states. [2020-10-15 03:31:59,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35763 to 34353. [2020-10-15 03:31:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34353 states. [2020-10-15 03:31:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34353 states to 34353 states and 52541 transitions. [2020-10-15 03:31:59,463 INFO L78 Accepts]: Start accepts. Automaton has 34353 states and 52541 transitions. Word has length 133 [2020-10-15 03:31:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:59,463 INFO L479 AbstractCegarLoop]: Abstraction has 34353 states and 52541 transitions. [2020-10-15 03:31:59,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:31:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 34353 states and 52541 transitions. [2020-10-15 03:31:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-15 03:31:59,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:59,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:59,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:31:59,568 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:59,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:59,569 INFO L82 PathProgramCache]: Analyzing trace with hash 455355857, now seen corresponding path program 1 times [2020-10-15 03:31:59,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:59,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225624636] [2020-10-15 03:31:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:59,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:59,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:59,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:04,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:04,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-15 03:32:04,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:32:04,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 03:32:04,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:04,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:32:04,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-15 03:32:04,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 03:32:04,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:32:04,942 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:32:04,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:04,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:04,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:04,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:04,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:32:04,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:04,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:32:04,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:04,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:32:04,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:04,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225624636] [2020-10-15 03:32:04,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:04,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:32:04,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203468935] [2020-10-15 03:32:04,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:32:04,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:04,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:32:04,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:32:04,982 INFO L87 Difference]: Start difference. First operand 34353 states and 52541 transitions. Second operand 4 states. [2020-10-15 03:32:07,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:07,932 INFO L93 Difference]: Finished difference Result 55765 states and 85343 transitions. [2020-10-15 03:32:07,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:32:07,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-15 03:32:07,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:07,988 INFO L225 Difference]: With dead ends: 55765 [2020-10-15 03:32:07,988 INFO L226 Difference]: Without dead ends: 34291 [2020-10-15 03:32:08,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:32:08,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34291 states. [2020-10-15 03:32:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34291 to 34289. [2020-10-15 03:32:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34289 states. [2020-10-15 03:32:09,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34289 states to 34289 states and 52093 transitions. [2020-10-15 03:32:09,423 INFO L78 Accepts]: Start accepts. Automaton has 34289 states and 52093 transitions. Word has length 135 [2020-10-15 03:32:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:09,424 INFO L479 AbstractCegarLoop]: Abstraction has 34289 states and 52093 transitions. [2020-10-15 03:32:09,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:32:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 34289 states and 52093 transitions. [2020-10-15 03:32:09,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-15 03:32:09,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:09,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:09,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:32:09,472 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:09,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:09,473 INFO L82 PathProgramCache]: Analyzing trace with hash 817821241, now seen corresponding path program 1 times [2020-10-15 03:32:09,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:09,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682402445] [2020-10-15 03:32:09,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:09,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:09,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:09,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:09,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:13,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:13,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-15 03:32:13,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:32:13,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4315 [2020-10-15 03:32:13,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:13,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:32:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-15 03:32:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:32:13,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:14,010 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:32:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:14,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:14,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:14,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:14,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:32:14,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:14,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:32:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:32:14,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:14,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682402445] [2020-10-15 03:32:14,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:14,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:32:14,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807603589] [2020-10-15 03:32:14,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:32:14,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:14,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:32:14,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:32:14,046 INFO L87 Difference]: Start difference. First operand 34289 states and 52093 transitions. Second operand 5 states. [2020-10-15 03:32:16,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:16,485 INFO L93 Difference]: Finished difference Result 57331 states and 86654 transitions. [2020-10-15 03:32:16,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:32:16,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-15 03:32:16,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:16,544 INFO L225 Difference]: With dead ends: 57331 [2020-10-15 03:32:16,545 INFO L226 Difference]: Without dead ends: 34289 [2020-10-15 03:32:16,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:32:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34289 states. [2020-10-15 03:32:18,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34289 to 34289. [2020-10-15 03:32:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34289 states. [2020-10-15 03:32:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34289 states to 34289 states and 51325 transitions. [2020-10-15 03:32:18,186 INFO L78 Accepts]: Start accepts. Automaton has 34289 states and 51325 transitions. Word has length 135 [2020-10-15 03:32:18,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:18,186 INFO L479 AbstractCegarLoop]: Abstraction has 34289 states and 51325 transitions. [2020-10-15 03:32:18,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:32:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 34289 states and 51325 transitions. [2020-10-15 03:32:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-15 03:32:18,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:18,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:18,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:32:18,227 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:18,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:18,228 INFO L82 PathProgramCache]: Analyzing trace with hash 123092966, now seen corresponding path program 1 times [2020-10-15 03:32:18,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:18,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675790018] [2020-10-15 03:32:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:18,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:18,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:23,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:23,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-15 03:32:23,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:32:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4939 [2020-10-15 03:32:23,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:23,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:32:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-15 03:32:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 03:32:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:23,364 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:32:23,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:23,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:23,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:23,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:23,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:23,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:32:23,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:23,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:32:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:32:23,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:23,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675790018] [2020-10-15 03:32:23,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:23,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:32:23,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934867543] [2020-10-15 03:32:23,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:32:23,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:23,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:32:23,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:32:23,407 INFO L87 Difference]: Start difference. First operand 34289 states and 51325 transitions. Second operand 4 states. [2020-10-15 03:32:23,577 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:32:26,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:26,918 INFO L93 Difference]: Finished difference Result 72037 states and 106467 transitions. [2020-10-15 03:32:26,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:32:26,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-15 03:32:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:26,995 INFO L225 Difference]: With dead ends: 72037 [2020-10-15 03:32:26,995 INFO L226 Difference]: Without dead ends: 60131 [2020-10-15 03:32:27,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:32:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60131 states. [2020-10-15 03:32:29,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60131 to 52049. [2020-10-15 03:32:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52049 states. [2020-10-15 03:32:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52049 states to 52049 states and 76545 transitions. [2020-10-15 03:32:29,183 INFO L78 Accepts]: Start accepts. Automaton has 52049 states and 76545 transitions. Word has length 137 [2020-10-15 03:32:29,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:29,184 INFO L479 AbstractCegarLoop]: Abstraction has 52049 states and 76545 transitions. [2020-10-15 03:32:29,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:32:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 52049 states and 76545 transitions. [2020-10-15 03:32:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-15 03:32:29,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:29,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:29,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:32:29,235 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:29,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:29,236 INFO L82 PathProgramCache]: Analyzing trace with hash -998035622, now seen corresponding path program 1 times [2020-10-15 03:32:29,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:29,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110871043] [2020-10-15 03:32:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:29,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:29,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:29,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:29,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:29,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:34,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:34,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-15 03:32:34,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:32:34,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:32:34,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:34,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:32:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-15 03:32:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:32:34,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:34,444 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:32:34,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:34,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:34,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:34,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:34,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:34,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:32:34,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:34,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:32:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:32:34,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:34,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110871043] [2020-10-15 03:32:34,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:34,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:32:34,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542827194] [2020-10-15 03:32:34,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:32:34,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:34,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:32:34,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:32:34,478 INFO L87 Difference]: Start difference. First operand 52049 states and 76545 transitions. Second operand 4 states. [2020-10-15 03:32:34,670 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 03:32:39,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:39,222 INFO L93 Difference]: Finished difference Result 127787 states and 186914 transitions. [2020-10-15 03:32:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:32:39,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-15 03:32:39,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:39,301 INFO L225 Difference]: With dead ends: 127787 [2020-10-15 03:32:39,301 INFO L226 Difference]: Without dead ends: 76990 [2020-10-15 03:32:39,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:32:39,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76990 states. [2020-10-15 03:32:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76990 to 76507. [2020-10-15 03:32:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76507 states. [2020-10-15 03:32:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76507 states to 76507 states and 110070 transitions. [2020-10-15 03:32:43,705 INFO L78 Accepts]: Start accepts. Automaton has 76507 states and 110070 transitions. Word has length 139 [2020-10-15 03:32:43,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:43,705 INFO L479 AbstractCegarLoop]: Abstraction has 76507 states and 110070 transitions. [2020-10-15 03:32:43,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:32:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 76507 states and 110070 transitions. [2020-10-15 03:32:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-15 03:32:43,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:43,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:43,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:32:43,783 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:43,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:43,783 INFO L82 PathProgramCache]: Analyzing trace with hash 722521987, now seen corresponding path program 1 times [2020-10-15 03:32:43,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:43,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397647200] [2020-10-15 03:32:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:43,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:44,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:49,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:49,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-15 03:32:49,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:32:49,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5509 [2020-10-15 03:32:49,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:49,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:49,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:32:49,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 03:32:49,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:32:49,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:49,500 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:32:49,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:49,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:49,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:49,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:49,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:49,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:32:49,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:49,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:32:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:32:49,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:49,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397647200] [2020-10-15 03:32:49,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:49,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:32:49,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654591855] [2020-10-15 03:32:49,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:32:49,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:49,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:32:49,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:32:49,527 INFO L87 Difference]: Start difference. First operand 76507 states and 110070 transitions. Second operand 6 states. [2020-10-15 03:32:56,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:56,978 INFO L93 Difference]: Finished difference Result 191017 states and 275884 transitions. [2020-10-15 03:32:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:32:56,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-15 03:32:56,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:57,115 INFO L225 Difference]: With dead ends: 191017 [2020-10-15 03:32:57,115 INFO L226 Difference]: Without dead ends: 127683 [2020-10-15 03:32:57,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:32:57,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127683 states. [2020-10-15 03:33:01,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127683 to 75257. [2020-10-15 03:33:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75257 states. [2020-10-15 03:33:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75257 states to 75257 states and 107706 transitions. [2020-10-15 03:33:01,580 INFO L78 Accepts]: Start accepts. Automaton has 75257 states and 107706 transitions. Word has length 139 [2020-10-15 03:33:01,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:01,580 INFO L479 AbstractCegarLoop]: Abstraction has 75257 states and 107706 transitions. [2020-10-15 03:33:01,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:33:01,580 INFO L276 IsEmpty]: Start isEmpty. Operand 75257 states and 107706 transitions. [2020-10-15 03:33:01,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-15 03:33:01,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:01,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:33:01,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:33:01,648 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:01,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:01,648 INFO L82 PathProgramCache]: Analyzing trace with hash -2001946771, now seen corresponding path program 1 times [2020-10-15 03:33:01,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:01,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257871864] [2020-10-15 03:33:01,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:01,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:01,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:01,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:02,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:02,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:02,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:02,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:02,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:06,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:06,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-15 03:33:06,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:33:06,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5221 [2020-10-15 03:33:06,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:06,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:06,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:33:06,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:33:06,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 03:33:06,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:07,183 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:33:07,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:07,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:07,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:07,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:33:07,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:07,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:33:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:33:07,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:07,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257871864] [2020-10-15 03:33:07,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:07,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:33:07,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482533892] [2020-10-15 03:33:07,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:33:07,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:07,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:33:07,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:33:07,240 INFO L87 Difference]: Start difference. First operand 75257 states and 107706 transitions. Second operand 9 states. [2020-10-15 03:33:07,437 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-15 03:33:19,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:19,416 INFO L93 Difference]: Finished difference Result 255669 states and 364072 transitions. [2020-10-15 03:33:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:33:19,416 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-10-15 03:33:19,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:19,610 INFO L225 Difference]: With dead ends: 255669 [2020-10-15 03:33:19,611 INFO L226 Difference]: Without dead ends: 185303 [2020-10-15 03:33:19,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-15 03:33:19,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185303 states. [2020-10-15 03:33:27,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185303 to 82057. [2020-10-15 03:33:27,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82057 states. [2020-10-15 03:33:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82057 states to 82057 states and 115958 transitions. [2020-10-15 03:33:27,706 INFO L78 Accepts]: Start accepts. Automaton has 82057 states and 115958 transitions. Word has length 139 [2020-10-15 03:33:27,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:27,707 INFO L479 AbstractCegarLoop]: Abstraction has 82057 states and 115958 transitions. [2020-10-15 03:33:27,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:33:27,707 INFO L276 IsEmpty]: Start isEmpty. Operand 82057 states and 115958 transitions. [2020-10-15 03:33:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-15 03:33:27,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:27,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:33:27,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:33:27,780 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:27,781 INFO L82 PathProgramCache]: Analyzing trace with hash -149746841, now seen corresponding path program 1 times [2020-10-15 03:33:27,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:27,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259893325] [2020-10-15 03:33:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:27,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:32,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-15 03:33:32,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:33:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:33:32,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:32,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:33:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 03:33:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:33:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:32,993 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:33:32,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:33,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:33,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:33,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:33,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:33,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:33:33,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:33,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:33:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:33:33,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:33,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259893325] [2020-10-15 03:33:33,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:33,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:33:33,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290619336] [2020-10-15 03:33:33,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:33:33,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:33,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:33:33,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:33:33,028 INFO L87 Difference]: Start difference. First operand 82057 states and 115958 transitions. Second operand 6 states. [2020-10-15 03:33:43,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:43,603 INFO L93 Difference]: Finished difference Result 216481 states and 305396 transitions. [2020-10-15 03:33:43,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:33:43,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-15 03:33:43,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:43,754 INFO L225 Difference]: With dead ends: 216481 [2020-10-15 03:33:43,755 INFO L226 Difference]: Without dead ends: 138371 [2020-10-15 03:33:43,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:33:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138371 states. [2020-10-15 03:33:53,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138371 to 83401. [2020-10-15 03:33:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83401 states. [2020-10-15 03:33:53,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83401 states to 83401 states and 116860 transitions. [2020-10-15 03:33:53,131 INFO L78 Accepts]: Start accepts. Automaton has 83401 states and 116860 transitions. Word has length 139 [2020-10-15 03:33:53,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:53,131 INFO L479 AbstractCegarLoop]: Abstraction has 83401 states and 116860 transitions. [2020-10-15 03:33:53,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:33:53,131 INFO L276 IsEmpty]: Start isEmpty. Operand 83401 states and 116860 transitions. [2020-10-15 03:33:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-15 03:33:53,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:53,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:33:53,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:33:53,206 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:53,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:53,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1676162328, now seen corresponding path program 1 times [2020-10-15 03:33:53,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:53,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479407443] [2020-10-15 03:33:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:53,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:53,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:53,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:54,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:58,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-15 03:33:58,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:33:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:33:58,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:58,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:33:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 03:33:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:33:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:58,438 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:33:58,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:58,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:58,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:58,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:33:58,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:58,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:33:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:33:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:58,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479407443] [2020-10-15 03:33:58,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:58,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:33:58,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285776280] [2020-10-15 03:33:58,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:33:58,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:58,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:33:58,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:33:58,467 INFO L87 Difference]: Start difference. First operand 83401 states and 116860 transitions. Second operand 6 states. [2020-10-15 03:34:08,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:08,497 INFO L93 Difference]: Finished difference Result 199825 states and 280252 transitions. [2020-10-15 03:34:08,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:34:08,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-15 03:34:08,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:08,632 INFO L225 Difference]: With dead ends: 199825 [2020-10-15 03:34:08,632 INFO L226 Difference]: Without dead ends: 124187 [2020-10-15 03:34:08,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:34:08,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124187 states. [2020-10-15 03:34:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124187 to 81991. [2020-10-15 03:34:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81991 states. [2020-10-15 03:34:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81991 states to 81991 states and 113502 transitions. [2020-10-15 03:34:15,122 INFO L78 Accepts]: Start accepts. Automaton has 81991 states and 113502 transitions. Word has length 139 [2020-10-15 03:34:15,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:15,122 INFO L479 AbstractCegarLoop]: Abstraction has 81991 states and 113502 transitions. [2020-10-15 03:34:15,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:34:15,122 INFO L276 IsEmpty]: Start isEmpty. Operand 81991 states and 113502 transitions. [2020-10-15 03:34:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-15 03:34:15,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:15,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:34:15,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:34:15,197 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:15,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:15,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2083746094, now seen corresponding path program 1 times [2020-10-15 03:34:15,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:15,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130493886] [2020-10-15 03:34:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:16,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:16,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking...