/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.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 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/ps3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:19:10,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:19:10,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:19:10,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:19:10,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:19:10,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:19:10,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:19:10,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:19:10,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:19:10,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:19:10,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:19:10,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:19:10,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:19:10,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:19:10,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:19:10,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:19:10,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:19:10,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:19:10,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:19:10,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:19:10,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:19:10,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:19:10,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:19:10,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:19:10,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 06:19:10,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:19:10,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:19:10,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:19:10,186 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 [2020-07-20 06:19:10,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:19:10,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:19:10,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:19:10,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:19:10,214 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:19:10,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:19:10,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:19:10,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:19:10,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:19:10,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:19:10,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:19:10,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:19:10,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:19:10,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:19:10,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:19:10,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:19:10,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:19:10,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:19:10,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:19:10,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:19:10,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:19:10,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:19:10,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:19:10,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:19:10,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:19:10,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:19:10,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:19:10,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:19:10,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:19:10,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 06:19:10,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:19:10,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:19:10,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:19:10,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:19:10,607 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:19:10,608 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps3.c [2020-07-20 06:19:10,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/559ca773b/fcfda29a55784984bf7a2a0c08dd713b/FLAG901e38d0c [2020-07-20 06:19:11,165 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:19:11,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps3.c [2020-07-20 06:19:11,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/559ca773b/fcfda29a55784984bf7a2a0c08dd713b/FLAG901e38d0c [2020-07-20 06:19:11,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/559ca773b/fcfda29a55784984bf7a2a0c08dd713b [2020-07-20 06:19:11,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:19:11,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:19:11,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:19:11,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:19:11,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:19:11,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:19:11" (1/1) ... [2020-07-20 06:19:11,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f44038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:19:11, skipping insertion in model container [2020-07-20 06:19:11,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:19:11" (1/1) ... [2020-07-20 06:19:11,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:19:11,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:19:11,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:19:11,816 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:19:11,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:19:11,844 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:19:11,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:19:11 WrapperNode [2020-07-20 06:19:11,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:19:11,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:19:11,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:19:11,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:19:11,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:19:11" (1/1) ... [2020-07-20 06:19:11,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:19:11" (1/1) ... [2020-07-20 06:19:11,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:19:11" (1/1) ... [2020-07-20 06:19:11,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:19:11" (1/1) ... [2020-07-20 06:19:11,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:19:11" (1/1) ... [2020-07-20 06:19:11,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:19:11" (1/1) ... [2020-07-20 06:19:11,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:19:11" (1/1) ... [2020-07-20 06:19:11,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:19:11,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:19:11,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:19:11,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:19:11,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:19:11" (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 [2020-07-20 06:19:12,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:19:12,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:19:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:19:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:19:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:19:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:19:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:19:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:19:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:19:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:19:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:19:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:19:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:19:12,191 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:19:12,191 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 06:19:12,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:19:12 BoogieIcfgContainer [2020-07-20 06:19:12,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:19:12,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:19:12,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:19:12,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:19:12,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:19:11" (1/3) ... [2020-07-20 06:19:12,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3552ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:19:12, skipping insertion in model container [2020-07-20 06:19:12,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:19:11" (2/3) ... [2020-07-20 06:19:12,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3552ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:19:12, skipping insertion in model container [2020-07-20 06:19:12,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:19:12" (3/3) ... [2020-07-20 06:19:12,204 INFO L109 eAbstractionObserver]: Analyzing ICFG ps3.c [2020-07-20 06:19:12,214 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:19:12,222 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:19:12,237 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:19:12,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:19:12,283 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:19:12,283 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:19:12,283 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:19:12,283 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:19:12,284 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:19:12,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:19:12,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:19:12,322 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 06:19:12,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 06:19:12,331 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:19:12,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:19:12,333 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:19:12,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:19:12,340 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-07-20 06:19:12,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:19:12,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756189666] [2020-07-20 06:19:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4fb01dc [2020-07-20 06:19:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:19:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:19:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:19:12,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756189666] [2020-07-20 06:19:12,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:19:12,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 06:19:12,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963921693] [2020-07-20 06:19:12,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 06:19:12,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:19:12,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 06:19:12,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 06:19:12,494 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-20 06:19:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:19:12,514 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-07-20 06:19:12,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 06:19:12,515 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-20 06:19:12,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:19:12,523 INFO L225 Difference]: With dead ends: 35 [2020-07-20 06:19:12,523 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 06:19:12,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 06:19:12,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 06:19:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 06:19:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 06:19:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-20 06:19:12,562 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-07-20 06:19:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:19:12,562 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-20 06:19:12,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 06:19:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-20 06:19:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 06:19:12,564 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:19:12,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:19:12,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:19:12,564 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:19:12,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:19:12,565 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-07-20 06:19:12,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:19:12,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274374818] [2020-07-20 06:19:12,566 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4fb01dc [2020-07-20 06:19:12,573 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:19:12,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733404160] [2020-07-20 06:19:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b15a926 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:19:12,628 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b15a926 issued 3 check-sat command(s) [2020-07-20 06:19:12,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:19:12,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 06:19:12,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:19:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:19:12,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274374818] [2020-07-20 06:19:12,724 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:19:12,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733404160] [2020-07-20 06:19:12,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:19:12,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:19:12,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846343483] [2020-07-20 06:19:12,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:19:12,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:19:12,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:19:12,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:19:12,728 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-20 06:19:12,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:19:12,792 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-07-20 06:19:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:19:12,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-20 06:19:12,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:19:12,794 INFO L225 Difference]: With dead ends: 25 [2020-07-20 06:19:12,794 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 06:19:12,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:19:12,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 06:19:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-20 06:19:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 06:19:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-20 06:19:12,803 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-20 06:19:12,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:19:12,803 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-20 06:19:12,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:19:12,804 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-20 06:19:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 06:19:12,805 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:19:12,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:19:13,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 06:19:13,022 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:19:13,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:19:13,024 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-07-20 06:19:13,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:19:13,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351175398] [2020-07-20 06:19:13,025 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4fb01dc [2020-07-20 06:19:13,032 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:19:13,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657944435] [2020-07-20 06:19:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@72936c5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:19:13,068 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@72936c5 issued 4 check-sat command(s) [2020-07-20 06:19:13,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:19:13,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 06:19:13,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:19:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:19:13,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351175398] [2020-07-20 06:19:13,143 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:19:13,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657944435] [2020-07-20 06:19:13,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:19:13,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-20 06:19:13,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190187792] [2020-07-20 06:19:13,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 06:19:13,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:19:13,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 06:19:13,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:19:13,146 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-07-20 06:19:13,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:19:13,207 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-20 06:19:13,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:19:13,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-20 06:19:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:19:13,209 INFO L225 Difference]: With dead ends: 32 [2020-07-20 06:19:13,209 INFO L226 Difference]: Without dead ends: 29 [2020-07-20 06:19:13,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:19:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-20 06:19:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-20 06:19:13,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 06:19:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-20 06:19:13,218 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-07-20 06:19:13,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:19:13,219 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-20 06:19:13,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 06:19:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-20 06:19:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 06:19:13,220 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:19:13,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:19:13,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:19:13,435 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:19:13,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:19:13,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1538749201, now seen corresponding path program 2 times [2020-07-20 06:19:13,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:19:13,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887605795] [2020-07-20 06:19:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4fb01dc [2020-07-20 06:19:13,443 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:19:13,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248465269] [2020-07-20 06:19:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f824623 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:19:13,505 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f824623 issued 4 check-sat command(s) [2020-07-20 06:19:13,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:19:13,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 06:19:13,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:19:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 06:19:13,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887605795] [2020-07-20 06:19:13,612 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:19:13,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248465269] [2020-07-20 06:19:13,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:19:13,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-20 06:19:13,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390300224] [2020-07-20 06:19:13,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 06:19:13,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:19:13,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 06:19:13,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:19:13,618 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 7 states. [2020-07-20 06:19:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:19:13,744 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-07-20 06:19:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 06:19:13,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-07-20 06:19:13,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:19:13,747 INFO L225 Difference]: With dead ends: 39 [2020-07-20 06:19:13,747 INFO L226 Difference]: Without dead ends: 36 [2020-07-20 06:19:13,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 06:19:13,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-20 06:19:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-20 06:19:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 06:19:13,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-07-20 06:19:13,760 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2020-07-20 06:19:13,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:19:13,760 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-07-20 06:19:13,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 06:19:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-07-20 06:19:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 06:19:13,762 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:19:13,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:19:13,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:19:13,978 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:19:13,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:19:13,979 INFO L82 PathProgramCache]: Analyzing trace with hash -695576914, now seen corresponding path program 3 times [2020-07-20 06:19:13,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:19:13,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930048136] [2020-07-20 06:19:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4fb01dc [2020-07-20 06:19:13,987 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:19:13,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925964862] [2020-07-20 06:19:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7b157efa No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:19:14,104 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7b157efa issued 4 check-sat command(s) [2020-07-20 06:19:14,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:19:14,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 06:19:14,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:19:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 06:19:14,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930048136] [2020-07-20 06:19:14,267 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:19:14,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925964862] [2020-07-20 06:19:14,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:19:14,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-20 06:19:14,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065254954] [2020-07-20 06:19:14,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 06:19:14,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:19:14,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 06:19:14,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-07-20 06:19:14,270 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 10 states. [2020-07-20 06:19:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:19:14,444 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-07-20 06:19:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 06:19:14,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-07-20 06:19:14,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:19:14,446 INFO L225 Difference]: With dead ends: 46 [2020-07-20 06:19:14,446 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 06:19:14,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-20 06:19:14,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 06:19:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-20 06:19:14,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 06:19:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-07-20 06:19:14,457 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 31 [2020-07-20 06:19:14,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:19:14,457 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-07-20 06:19:14,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 06:19:14,458 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-07-20 06:19:14,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 06:19:14,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:19:14,459 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:19:14,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:19:14,663 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:19:14,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:19:14,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1264228465, now seen corresponding path program 4 times [2020-07-20 06:19:14,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:19:14,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954710271] [2020-07-20 06:19:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4fb01dc [2020-07-20 06:19:14,670 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:19:14,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975619795] [2020-07-20 06:19:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ed8e681 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:19:14,820 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ed8e681 issued 4 check-sat command(s) [2020-07-20 06:19:14,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:19:14,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-20 06:19:14,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:19:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-20 06:19:14,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954710271] [2020-07-20 06:19:14,965 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:19:14,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975619795] [2020-07-20 06:19:14,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:19:14,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-07-20 06:19:14,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638081834] [2020-07-20 06:19:14,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 06:19:14,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:19:14,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 06:19:14,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-07-20 06:19:14,967 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 11 states. [2020-07-20 06:19:15,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:19:15,181 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-07-20 06:19:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 06:19:15,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-07-20 06:19:15,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:19:15,185 INFO L225 Difference]: With dead ends: 53 [2020-07-20 06:19:15,185 INFO L226 Difference]: Without dead ends: 50 [2020-07-20 06:19:15,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-20 06:19:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-20 06:19:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-20 06:19:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 06:19:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-07-20 06:19:15,198 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 38 [2020-07-20 06:19:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:19:15,199 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-07-20 06:19:15,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 06:19:15,199 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-07-20 06:19:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 06:19:15,200 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:19:15,201 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:19:15,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-20 06:19:15,402 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:19:15,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:19:15,403 INFO L82 PathProgramCache]: Analyzing trace with hash 427058510, now seen corresponding path program 5 times [2020-07-20 06:19:15,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:19:15,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102175485] [2020-07-20 06:19:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4fb01dc [2020-07-20 06:19:15,409 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:19:15,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710565103] [2020-07-20 06:19:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@149a37f7 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:19:15,626 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@149a37f7 issued 4 check-sat command(s) [2020-07-20 06:19:15,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:19:15,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 41 conjunts are in the unsatisfiable core [2020-07-20 06:19:15,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:19:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 46 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-20 06:19:15,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102175485] [2020-07-20 06:19:15,947 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:19:15,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710565103] [2020-07-20 06:19:15,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:19:15,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-07-20 06:19:15,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56301884] [2020-07-20 06:19:15,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 06:19:15,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:19:15,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 06:19:15,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-07-20 06:19:15,950 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 13 states. [2020-07-20 06:19:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:19:16,274 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-07-20 06:19:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 06:19:16,275 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-07-20 06:19:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:19:16,277 INFO L225 Difference]: With dead ends: 60 [2020-07-20 06:19:16,278 INFO L226 Difference]: Without dead ends: 57 [2020-07-20 06:19:16,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-07-20 06:19:16,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-20 06:19:16,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-20 06:19:16,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-20 06:19:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-07-20 06:19:16,289 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 45 [2020-07-20 06:19:16,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:19:16,290 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-07-20 06:19:16,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 06:19:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-07-20 06:19:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 06:19:16,291 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:19:16,292 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:19:16,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:19:16,495 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:19:16,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:19:16,496 INFO L82 PathProgramCache]: Analyzing trace with hash 174118353, now seen corresponding path program 6 times [2020-07-20 06:19:16,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:19:16,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062138008] [2020-07-20 06:19:16,497 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4fb01dc [2020-07-20 06:19:16,502 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:19:16,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488256431] [2020-07-20 06:19:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bac8fdb No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true