/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:32:23,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:32:23,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:32:23,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:32:23,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:32:23,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:32:23,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:32:23,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:32:23,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:32:23,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:32:23,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:32:23,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:32:23,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:32:23,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:32:23,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:32:23,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:32:23,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:32:23,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:32:23,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:32:23,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:32:23,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:32:23,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:32:23,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:32:23,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:32:23,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 23:32:23,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 23:32:23,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 23:32:23,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 23:32:23,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 23:32:23,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 23:32:23,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 23:32:23,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 23:32:23,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 23:32:23,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 23:32:23,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 23:32:23,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 23:32:23,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 23:32:23,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 23:32:23,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:32:23,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:32:23,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:32:23,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 23:32:23,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:32:23,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:32:23,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:32:23,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:32:23,780 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:32:23,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:32:23,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:32:23,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:32:23,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:32:23,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:32:23,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:32:23,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:32:23,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:32:23,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:32:23,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:32:23,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:32:23,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:32:23,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:32:23,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:32:23,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:32:23,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:32:23,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:32:23,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:32:23,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:32:23,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:32:23,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:32:23,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:32:23,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:32:23,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:32:23,800 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 23:32:24,283 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:32:24,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:32:24,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:32:24,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:32:24,344 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:32:24,348 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2020-07-21 23:32:24,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23994eec5/3325105b829c4cdf8e2d668417ff3eb0/FLAGadc7a865e [2020-07-21 23:32:25,506 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:32:25,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2020-07-21 23:32:25,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23994eec5/3325105b829c4cdf8e2d668417ff3eb0/FLAGadc7a865e [2020-07-21 23:32:25,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23994eec5/3325105b829c4cdf8e2d668417ff3eb0 [2020-07-21 23:32:25,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:32:25,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:32:25,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:32:25,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:32:25,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:32:25,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:32:25" (1/1) ... [2020-07-21 23:32:25,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8822952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:32:25, skipping insertion in model container [2020-07-21 23:32:25,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:32:25" (1/1) ... [2020-07-21 23:32:25,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:32:25,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:32:26,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:32:26,216 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:32:26,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:32:26,299 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:32:26,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:32:26 WrapperNode [2020-07-21 23:32:26,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:32:26,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:32:26,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:32:26,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:32:26,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:32:26" (1/1) ... [2020-07-21 23:32:26,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:32:26" (1/1) ... [2020-07-21 23:32:26,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:32:26" (1/1) ... [2020-07-21 23:32:26,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:32:26" (1/1) ... [2020-07-21 23:32:26,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:32:26" (1/1) ... [2020-07-21 23:32:26,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:32:26" (1/1) ... [2020-07-21 23:32:26,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:32:26" (1/1) ... [2020-07-21 23:32:26,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:32:26,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:32:26,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:32:26,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:32:26,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:32:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-21 23:32:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:32:26,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:32:26,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:32:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:32:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:32:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 23:32:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:32:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:32:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:32:27,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:32:27,153 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 23:32:27,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:32:27 BoogieIcfgContainer [2020-07-21 23:32:27,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:32:27,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:32:27,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:32:27,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:32:27,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:32:25" (1/3) ... [2020-07-21 23:32:27,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb67e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:32:27, skipping insertion in model container [2020-07-21 23:32:27,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:32:26" (2/3) ... [2020-07-21 23:32:27,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb67e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:32:27, skipping insertion in model container [2020-07-21 23:32:27,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:32:27" (3/3) ... [2020-07-21 23:32:27,183 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+lhb-reducer.c [2020-07-21 23:32:27,212 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:32:27,229 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:32:27,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:32:27,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:32:27,288 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:32:27,288 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:32:27,288 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:32:27,289 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:32:27,289 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:32:27,289 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:32:27,289 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:32:27,320 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-21 23:32:27,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 23:32:27,332 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:32:27,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:32:27,335 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:32:27,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:32:27,346 INFO L82 PathProgramCache]: Analyzing trace with hash 446778609, now seen corresponding path program 1 times [2020-07-21 23:32:27,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:32:27,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106622256] [2020-07-21 23:32:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in