/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-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:46:19,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:46:19,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:46:19,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:46:19,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:46:19,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:46:19,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:46:19,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:46:19,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:46:19,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:46:19,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:46:19,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:46:19,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:46:19,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:46:19,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:46:19,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:46:19,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:46:19,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:46:19,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:46:19,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:46:19,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:46:19,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:46:19,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:46:19,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:46:19,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:46:19,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:46:19,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:46:19,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:46:19,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:46:19,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:46:19,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:46:19,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:46:19,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:46:19,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:46:19,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:46:19,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:46:19,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:46:19,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:46:19,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:46:19,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:46:19,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:46:19,253 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 03:46:19,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:46:19,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:46:19,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:46:19,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:46:19,285 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:46:19,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:46:19,285 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:46:19,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:46:19,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:46:19,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:46:19,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:46:19,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:46:19,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:46:19,287 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:46:19,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:46:19,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:46:19,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:46:19,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:46:19,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:46:19,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:46:19,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:46:19,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:46:19,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:46:19,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:46:19,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:46:19,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:46:19,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:46:19,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:46:19,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:46:19,291 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 03:46:19,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:46:19,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:46:19,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:46:19,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:46:19,598 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:46:19,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-15 03:46:19,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adb3bf23f/a53c6f0a11d2448fab92335ffc1bea00/FLAG11e583ab2 [2020-10-15 03:46:20,482 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:46:20,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-15 03:46:20,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adb3bf23f/a53c6f0a11d2448fab92335ffc1bea00/FLAG11e583ab2 [2020-10-15 03:46:21,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adb3bf23f/a53c6f0a11d2448fab92335ffc1bea00 [2020-10-15 03:46:21,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:46:21,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:46:21,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:46:21,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:46:21,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:46:21,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:46:21" (1/1) ... [2020-10-15 03:46:21,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368a0f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:21, skipping insertion in model container [2020-10-15 03:46:21,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:46:21" (1/1) ... [2020-10-15 03:46:21,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:46:21,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:46:23,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:46:23,335 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:46:24,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:46:24,592 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:46:24,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:24 WrapperNode [2020-10-15 03:46:24,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:46:24,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:46:24,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:46:24,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:46:24,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:24" (1/1) ... [2020-10-15 03:46:24,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:24" (1/1) ... [2020-10-15 03:46:24,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:24" (1/1) ... [2020-10-15 03:46:24,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:24" (1/1) ... [2020-10-15 03:46:24,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:24" (1/1) ... [2020-10-15 03:46:24,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:24" (1/1) ... [2020-10-15 03:46:25,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:24" (1/1) ... [2020-10-15 03:46:25,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:46:25,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:46:25,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:46:25,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:46:25,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:24" (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 03:46:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:46:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:46:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:46:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:46:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:46:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:46:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:46:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:46:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:46:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:46:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:46:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:46:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:46:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:46:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:46:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:46:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:46:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:46:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:46:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:46:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:46:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:46:34,109 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:46:34,109 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:46:34,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:46:34 BoogieIcfgContainer [2020-10-15 03:46:34,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:46:34,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:46:34,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:46:34,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:46:34,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:46:21" (1/3) ... [2020-10-15 03:46:34,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599ce353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:46:34, skipping insertion in model container [2020-10-15 03:46:34,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:24" (2/3) ... [2020-10-15 03:46:34,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599ce353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:46:34, skipping insertion in model container [2020-10-15 03:46:34,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:46:34" (3/3) ... [2020-10-15 03:46:34,138 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-15 03:46:34,149 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:46:34,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-10-15 03:46:34,172 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-10-15 03:46:34,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:46:34,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:46:34,212 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:46:34,212 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:46:34,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:46:34,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:46:34,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:46:34,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:46:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states. [2020-10-15 03:46:34,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:46:34,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:34,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:34,333 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:34,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:34,340 INFO L82 PathProgramCache]: Analyzing trace with hash -556660971, now seen corresponding path program 1 times [2020-10-15 03:46:34,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:34,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392265157] [2020-10-15 03:46:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:35,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:36,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:37,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:40,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:40,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:46:40,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:46:40,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-15 03:46:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:40,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:46:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:46:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:46:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:46:43,196 WARN L193 SmtUtils]: Spent 2.89 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-15 03:46:43,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:43,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:43,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:43,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:43,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 03:46:43,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:43,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:46:43,321 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 03:46:43,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392265157] [2020-10-15 03:46:43,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:43,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:46:43,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746560821] [2020-10-15 03:46:43,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:46:43,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:43,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:46:43,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:46:43,350 INFO L87 Difference]: Start difference. First operand 3537 states. Second operand 6 states. [2020-10-15 03:46:46,512 WARN L193 SmtUtils]: Spent 3.00 s on a formula simplification that was a NOOP. DAG size: 737 [2020-10-15 03:47:32,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:32,432 INFO L93 Difference]: Finished difference Result 9049 states and 16060 transitions. [2020-10-15 03:47:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:47:32,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-15 03:47:32,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:32,493 INFO L225 Difference]: With dead ends: 9049 [2020-10-15 03:47:32,493 INFO L226 Difference]: Without dead ends: 6161 [2020-10-15 03:47:32,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:47:32,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6161 states. [2020-10-15 03:47:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6161 to 5919. [2020-10-15 03:47:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5919 states. [2020-10-15 03:47:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5919 states to 5919 states and 7825 transitions. [2020-10-15 03:47:32,801 INFO L78 Accepts]: Start accepts. Automaton has 5919 states and 7825 transitions. Word has length 68 [2020-10-15 03:47:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:32,801 INFO L479 AbstractCegarLoop]: Abstraction has 5919 states and 7825 transitions. [2020-10-15 03:47:32,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:47:32,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5919 states and 7825 transitions. [2020-10-15 03:47:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:47:32,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:32,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:47:32,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:47:32,819 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:32,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:32,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1406477790, now seen corresponding path program 1 times [2020-10-15 03:47:32,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:32,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464677443] [2020-10-15 03:47:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:32,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:33,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:33,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:33,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:37,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:37,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:37,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:47:37,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:47:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 03:47:37,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:37,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:47:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:47:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:47:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:40,939 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-15 03:47:40,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:40,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:40,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:40,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:40,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:40,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 03:47:40,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:40,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:47:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:47:40,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:41,037 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 03:47:41,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464677443] [2020-10-15 03:47:41,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:41,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:47:41,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296676446] [2020-10-15 03:47:41,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:47:41,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:41,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:47:41,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:47:41,041 INFO L87 Difference]: Start difference. First operand 5919 states and 7825 transitions. Second operand 6 states. [2020-10-15 03:47:43,807 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 737 [2020-10-15 03:48:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:48:16,993 INFO L93 Difference]: Finished difference Result 6327 states and 8411 transitions. [2020-10-15 03:48:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:48:16,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-15 03:48:16,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:48:17,022 INFO L225 Difference]: With dead ends: 6327 [2020-10-15 03:48:17,023 INFO L226 Difference]: Without dead ends: 6132 [2020-10-15 03:48:17,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:48:17,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2020-10-15 03:48:17,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 5908. [2020-10-15 03:48:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5908 states. [2020-10-15 03:48:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5908 states to 5908 states and 7809 transitions. [2020-10-15 03:48:17,176 INFO L78 Accepts]: Start accepts. Automaton has 5908 states and 7809 transitions. Word has length 68 [2020-10-15 03:48:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:48:17,176 INFO L479 AbstractCegarLoop]: Abstraction has 5908 states and 7809 transitions. [2020-10-15 03:48:17,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:48:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5908 states and 7809 transitions. [2020-10-15 03:48:17,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:48:17,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:48:17,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:48:17,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:48:17,192 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:48:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:48:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1269419232, now seen corresponding path program 1 times [2020-10-15 03:48:17,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:48:17,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045732753] [2020-10-15 03:48:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:48:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:17,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:20,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:20,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:21,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:22,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:22,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:48:22,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:48:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 03:48:22,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:22,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:48:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:48:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:48:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:48:25,409 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-15 03:48:25,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:48:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:25,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:25,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:25,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:48:25,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:48:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-15 03:48:25,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:25,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:48:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:48:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:48:25,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:48:25,573 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 03:48:25,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045732753] [2020-10-15 03:48:25,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:48:25,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:48:25,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728289751] [2020-10-15 03:48:25,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:48:25,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:48:25,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:48:25,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:48:25,576 INFO L87 Difference]: Start difference. First operand 5908 states and 7809 transitions. Second operand 9 states. [2020-10-15 03:48:28,412 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 747 [2020-10-15 03:49:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:06,090 INFO L93 Difference]: Finished difference Result 12854 states and 17552 transitions. [2020-10-15 03:49:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:49:06,091 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-15 03:49:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:06,132 INFO L225 Difference]: With dead ends: 12854 [2020-10-15 03:49:06,133 INFO L226 Difference]: Without dead ends: 10222 [2020-10-15 03:49:06,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:49:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10222 states. [2020-10-15 03:49:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10222 to 8693. [2020-10-15 03:49:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8693 states. [2020-10-15 03:49:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8693 states to 8693 states and 11681 transitions. [2020-10-15 03:49:06,408 INFO L78 Accepts]: Start accepts. Automaton has 8693 states and 11681 transitions. Word has length 69 [2020-10-15 03:49:06,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:06,408 INFO L479 AbstractCegarLoop]: Abstraction has 8693 states and 11681 transitions. [2020-10-15 03:49:06,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:49:06,409 INFO L276 IsEmpty]: Start isEmpty. Operand 8693 states and 11681 transitions. [2020-10-15 03:49:06,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:49:06,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:06,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:06,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:49:06,428 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:06,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:06,428 INFO L82 PathProgramCache]: Analyzing trace with hash 213915187, now seen corresponding path program 1 times [2020-10-15 03:49:06,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:06,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330190299] [2020-10-15 03:49:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:06,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:06,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:08,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:09,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:09,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:10,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:11,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:11,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:49:11,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:49:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-15 03:49:11,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:11,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:49:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:49:11,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:14,969 WARN L193 SmtUtils]: Spent 3.26 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-15 03:49:14,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:15,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:15,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:15,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:15,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:15,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 03:49:15,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:15,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:15,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:15,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:15,063 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 03:49:15,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330190299] [2020-10-15 03:49:15,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:15,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:49:15,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395215780] [2020-10-15 03:49:15,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:15,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:15,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:15,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:15,066 INFO L87 Difference]: Start difference. First operand 8693 states and 11681 transitions. Second operand 6 states. [2020-10-15 03:49:18,335 WARN L193 SmtUtils]: Spent 3.16 s on a formula simplification that was a NOOP. DAG size: 737 [2020-10-15 03:49:44,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:44,497 INFO L93 Difference]: Finished difference Result 10101 states and 13826 transitions. [2020-10-15 03:49:44,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:49:44,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-15 03:49:44,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:44,527 INFO L225 Difference]: With dead ends: 10101 [2020-10-15 03:49:44,527 INFO L226 Difference]: Without dead ends: 9395 [2020-10-15 03:49:44,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:49:44,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9395 states. [2020-10-15 03:49:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9395 to 8683. [2020-10-15 03:49:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8683 states. [2020-10-15 03:49:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8683 states to 8683 states and 11669 transitions. [2020-10-15 03:49:44,785 INFO L78 Accepts]: Start accepts. Automaton has 8683 states and 11669 transitions. Word has length 69 [2020-10-15 03:49:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:44,788 INFO L479 AbstractCegarLoop]: Abstraction has 8683 states and 11669 transitions. [2020-10-15 03:49:44,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:49:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 8683 states and 11669 transitions. [2020-10-15 03:49:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:49:44,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:44,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:44,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:49:44,812 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:44,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:44,812 INFO L82 PathProgramCache]: Analyzing trace with hash -181885345, now seen corresponding path program 1 times [2020-10-15 03:49:44,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:44,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202342854] [2020-10-15 03:49:44,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:44,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:45,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:45,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:46,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:47,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:49,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:49,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:49,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:49:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:49:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:49:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:49,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:49:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:49:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:52,855 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-15 03:49:52,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:52,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:52,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:52,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:52,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:49:52,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:52,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:52,932 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 03:49:52,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202342854] [2020-10-15 03:49:52,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:52,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:49:52,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451665222] [2020-10-15 03:49:52,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:52,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:52,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:52,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:52,935 INFO L87 Difference]: Start difference. First operand 8683 states and 11669 transitions. Second operand 6 states. [2020-10-15 03:49:55,858 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 737