/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 SingleStatement --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:37:45,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:37:45,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:37:45,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:37:45,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:37:45,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:37:45,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:37:45,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:37:45,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:37:45,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:37:45,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:37:45,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:37:45,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:37:45,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:37:45,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:37:45,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:37:45,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:37:45,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:37:45,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:37:45,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:37:45,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:37:45,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:37:45,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:37:45,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:37:45,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:37:45,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:37:45,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:37:45,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:37:45,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:37:45,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:37:45,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:37:45,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:37:45,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:37:45,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:37:45,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:37:45,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:37:45,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:37:45,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:37:45,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:37:45,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:37:45,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:37:45,211 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 [2020-09-24 19:37:45,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:37:45,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:37:45,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:37:45,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:37:45,239 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:37:45,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:37:45,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:37:45,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:37:45,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:37:45,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:37:45,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:37:45,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:37:45,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:37:45,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:37:45,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:37:45,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:37:45,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:37:45,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:37:45,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:37:45,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:37:45,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:37:45,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:37:45,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:37:45,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:37:45,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:37:45,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:37:45,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:37:45,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:37:45,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:37:45,244 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 -> SingleStatement 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:37:45,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:37:45,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:37:45,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:37:45,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:37:45,733 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:37:45,734 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-09-24 19:37:45,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29058d11a/27ce0eda9aab4ca794f27a7270fce00b/FLAGace208cfa [2020-09-24 19:37:46,586 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:37:46,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-09-24 19:37:46,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29058d11a/27ce0eda9aab4ca794f27a7270fce00b/FLAGace208cfa [2020-09-24 19:37:46,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29058d11a/27ce0eda9aab4ca794f27a7270fce00b [2020-09-24 19:37:46,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:37:46,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:37:46,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:37:46,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:37:46,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:37:46,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:37:46" (1/1) ... [2020-09-24 19:37:46,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1043d88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:46, skipping insertion in model container [2020-09-24 19:37:46,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:37:46" (1/1) ... [2020-09-24 19:37:46,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:37:46,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:37:48,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:37:48,741 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:37:50,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:37:50,118 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:37:50,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:50 WrapperNode [2020-09-24 19:37:50,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:37:50,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:37:50,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:37:50,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:37:50,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:50" (1/1) ... [2020-09-24 19:37:50,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:50" (1/1) ... [2020-09-24 19:37:50,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:50" (1/1) ... [2020-09-24 19:37:50,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:50" (1/1) ... [2020-09-24 19:37:50,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:50" (1/1) ... [2020-09-24 19:37:50,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:50" (1/1) ... [2020-09-24 19:37:50,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:50" (1/1) ... [2020-09-24 19:37:50,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:37:50,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:37:50,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:37:50,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:37:50,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:50" (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 [2020-09-24 19:37:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:37:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:37:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 19:37:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:37:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:37:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 19:37:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 19:37:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 19:37:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:37:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 19:37:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 19:37:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 19:37:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 19:37:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 19:37:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 19:37:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 19:37:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-24 19:37:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 19:37:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 19:37:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:37:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:37:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:37:55,770 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:37:55,771 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 19:37:55,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:37:55 BoogieIcfgContainer [2020-09-24 19:37:55,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:37:55,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:37:55,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:37:55,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:37:55,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:37:46" (1/3) ... [2020-09-24 19:37:55,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e834f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:37:55, skipping insertion in model container [2020-09-24 19:37:55,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:50" (2/3) ... [2020-09-24 19:37:55,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e834f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:37:55, skipping insertion in model container [2020-09-24 19:37:55,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:37:55" (3/3) ... [2020-09-24 19:37:55,805 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-09-24 19:37:55,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:37:55,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-24 19:37:55,861 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-24 19:37:55,909 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:37:55,909 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:37:55,909 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:37:55,909 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:37:55,909 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:37:55,910 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:37:55,910 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:37:55,910 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:37:55,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states. [2020-09-24 19:37:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1428 [2020-09-24 19:37:56,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:37:56,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:37:56,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:37:56,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:37:56,116 INFO L82 PathProgramCache]: Analyzing trace with hash -283699444, now seen corresponding path program 1 times [2020-09-24 19:37:56,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:37:56,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116331080] [2020-09-24 19:37:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:37:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:37:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:38:01,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:38:01,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1434 [2020-09-24 19:38:01,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:38:01,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2636 [2020-09-24 19:38:01,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:38:01,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:38:01,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 443 [2020-09-24 19:38:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-09-24 19:38:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:38:03,067 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 406 [2020-09-24 19:38:03,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:38:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:38:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:38:03,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:38:03,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-24 19:38:03,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:38:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 19:38:03,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:38:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:38:03,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:38:03,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:38:03,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:38:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:38:05,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116331080] [2020-09-24 19:38:05,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:38:05,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:38:05,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455484772] [2020-09-24 19:38:05,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:38:05,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:38:05,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:38:05,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:38:05,044 INFO L87 Difference]: Start difference. First operand 3644 states. Second operand 5 states. [2020-09-24 19:38:40,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:38:40,948 INFO L93 Difference]: Finished difference Result 9804 states and 13290 transitions. [2020-09-24 19:38:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:38:40,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1427 [2020-09-24 19:38:40,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:38:41,016 INFO L225 Difference]: With dead ends: 9804 [2020-09-24 19:38:41,016 INFO L226 Difference]: Without dead ends: 6285 [2020-09-24 19:38:41,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:38:41,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2020-09-24 19:38:41,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 6110. [2020-09-24 19:38:41,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6110 states. [2020-09-24 19:38:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 7969 transitions. [2020-09-24 19:38:41,370 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 7969 transitions. Word has length 1427 [2020-09-24 19:38:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:38:41,373 INFO L479 AbstractCegarLoop]: Abstraction has 6110 states and 7969 transitions. [2020-09-24 19:38:41,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:38:41,374 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 7969 transitions. [2020-09-24 19:38:41,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1430 [2020-09-24 19:38:41,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:38:41,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:38:41,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:38:41,596 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:38:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:38:41,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1947739959, now seen corresponding path program 1 times [2020-09-24 19:38:41,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:38:41,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429949550] [2020-09-24 19:38:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:38:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:38:42,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:38:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking...