/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 NUM_FUNCTIONS --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/geo2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:51:01,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:51:01,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:51:01,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:51:01,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:51:01,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:51:01,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:51:01,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:51:01,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:51:01,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:51:01,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:51:01,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:51:01,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:51:01,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:51:01,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:51:01,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:51:01,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:51:01,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:51:01,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:51:01,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:51:01,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:51:01,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:51:01,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:51:01,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:51:01,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 23:51:01,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 23:51:01,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 23:51:01,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 23:51:01,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 23:51:01,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 23:51:01,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 23:51:01,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 23:51:01,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 23:51:01,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 23:51:01,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 23:51:01,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 23:51:01,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 23:51:01,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 23:51:01,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:51:01,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:51:01,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:51:01,246 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 [2020-07-19 23:51:01,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:51:01,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:51:01,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:51:01,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:51:01,288 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:51:01,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:51:01,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:51:01,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:51:01,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:51:01,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:51:01,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:51:01,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:51:01,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:51:01,290 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:51:01,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:51:01,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:51:01,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:51:01,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:51:01,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:51:01,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:51:01,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:51:01,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:51:01,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:51:01,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:51:01,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:51:01,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:51:01,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:51:01,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:51:01,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:51:01,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 [2020-07-19 23:51:01,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:51:01,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:51:01,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:51:01,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:51:01,646 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:51:01,647 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2.c [2020-07-19 23:51:01,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffd31fce6/ac3286dc870a4b098ebd9b121f8d573c/FLAG969e86505 [2020-07-19 23:51:02,240 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:51:02,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2.c [2020-07-19 23:51:02,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffd31fce6/ac3286dc870a4b098ebd9b121f8d573c/FLAG969e86505 [2020-07-19 23:51:02,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffd31fce6/ac3286dc870a4b098ebd9b121f8d573c [2020-07-19 23:51:02,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:51:02,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:51:02,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:51:02,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:51:02,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:51:02,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:51:02" (1/1) ... [2020-07-19 23:51:02,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81328f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:02, skipping insertion in model container [2020-07-19 23:51:02,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:51:02" (1/1) ... [2020-07-19 23:51:02,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:51:02,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:51:02,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:51:02,948 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:51:02,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:51:02,991 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:51:02,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:02 WrapperNode [2020-07-19 23:51:02,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:51:02,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:51:02,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:51:02,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:51:03,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:02" (1/1) ... [2020-07-19 23:51:03,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:02" (1/1) ... [2020-07-19 23:51:03,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:02" (1/1) ... [2020-07-19 23:51:03,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:02" (1/1) ... [2020-07-19 23:51:03,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:02" (1/1) ... [2020-07-19 23:51:03,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:02" (1/1) ... [2020-07-19 23:51:03,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:02" (1/1) ... [2020-07-19 23:51:03,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:51:03,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:51:03,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:51:03,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:51:03,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:02" (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 [2020-07-19 23:51:03,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:51:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:51:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:51:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:51:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:51:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:51:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:51:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:51:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:51:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:51:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:51:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:51:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:51:03,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:51:03,502 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 23:51:03,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:51:03 BoogieIcfgContainer [2020-07-19 23:51:03,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:51:03,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:51:03,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:51:03,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:51:03,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:51:02" (1/3) ... [2020-07-19 23:51:03,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ab512a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:51:03, skipping insertion in model container [2020-07-19 23:51:03,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:02" (2/3) ... [2020-07-19 23:51:03,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ab512a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:51:03, skipping insertion in model container [2020-07-19 23:51:03,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:51:03" (3/3) ... [2020-07-19 23:51:03,521 INFO L109 eAbstractionObserver]: Analyzing ICFG geo2.c [2020-07-19 23:51:03,542 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:51:03,557 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:51:03,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:51:03,618 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:51:03,618 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:51:03,618 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:51:03,619 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:51:03,619 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:51:03,619 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:51:03,620 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:51:03,620 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:51:03,640 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-19 23:51:03,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 23:51:03,648 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:03,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:03,650 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:03,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:03,656 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-07-19 23:51:03,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:03,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103816090] [2020-07-19 23:51:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68de0d1c [2020-07-19 23:51:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:51:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:51:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:51:03,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103816090] [2020-07-19 23:51:03,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:51:03,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-19 23:51:03,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5904906] [2020-07-19 23:51:03,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 23:51:03,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:03,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 23:51:03,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 23:51:03,813 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-19 23:51:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:03,837 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-07-19 23:51:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 23:51:03,838 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-19 23:51:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:03,847 INFO L225 Difference]: With dead ends: 35 [2020-07-19 23:51:03,848 INFO L226 Difference]: Without dead ends: 15 [2020-07-19 23:51:03,852 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 [2020-07-19 23:51:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-19 23:51:03,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-19 23:51:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-19 23:51:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-19 23:51:03,900 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-07-19 23:51:03,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:03,900 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-19 23:51:03,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 23:51:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-19 23:51:03,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 23:51:03,901 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:03,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:03,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:51:03,902 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:03,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:03,903 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-07-19 23:51:03,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:03,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716463482] [2020-07-19 23:51:03,904 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68de0d1c [2020-07-19 23:51:03,916 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:03,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350388215] [2020-07-19 23:51:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@43ccf4d6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:04,054 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@43ccf4d6 issued 3 check-sat command(s) [2020-07-19 23:51:04,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:04,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-19 23:51:04,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:04,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:51:04,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716463482] [2020-07-19 23:51:04,223 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:04,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350388215] [2020-07-19 23:51:04,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:51:04,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:51:04,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635830213] [2020-07-19 23:51:04,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:51:04,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:04,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:51:04,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:51:04,235 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-19 23:51:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:04,336 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-07-19 23:51:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:51:04,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-19 23:51:04,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:04,338 INFO L225 Difference]: With dead ends: 25 [2020-07-19 23:51:04,338 INFO L226 Difference]: Without dead ends: 22 [2020-07-19 23:51:04,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:51:04,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-19 23:51:04,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-19 23:51:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-19 23:51:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-19 23:51:04,349 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-19 23:51:04,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:04,349 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-19 23:51:04,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:51:04,350 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-19 23:51:04,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 23:51:04,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:04,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:04,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 23:51:04,566 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:04,568 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-07-19 23:51:04,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:04,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907412377] [2020-07-19 23:51:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68de0d1c [2020-07-19 23:51:04,579 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:04,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113073545] [2020-07-19 23:51:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d49f747 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 [2020-07-19 23:51:04,627 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d49f747 issued 4 check-sat command(s) [2020-07-19 23:51:04,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:04,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-19 23:51:04,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:51:04,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907412377] [2020-07-19 23:51:04,738 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:04,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113073545] [2020-07-19 23:51:04,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:51:04,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-19 23:51:04,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202819002] [2020-07-19 23:51:04,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:51:04,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:04,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:51:04,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:51:04,741 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-07-19 23:51:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:04,827 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-19 23:51:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:51:04,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-19 23:51:04,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:04,829 INFO L225 Difference]: With dead ends: 32 [2020-07-19 23:51:04,829 INFO L226 Difference]: Without dead ends: 29 [2020-07-19 23:51:04,830 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 [2020-07-19 23:51:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-19 23:51:04,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-19 23:51:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-19 23:51:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-19 23:51:04,839 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-07-19 23:51:04,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:04,839 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-19 23:51:04,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:51:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-19 23:51:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 23:51:04,841 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:04,841 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:05,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:05,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:05,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1538749201, now seen corresponding path program 2 times [2020-07-19 23:51:05,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:05,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359589667] [2020-07-19 23:51:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68de0d1c [2020-07-19 23:51:05,068 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:05,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267900562] [2020-07-19 23:51:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36a401bc No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:05,175 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36a401bc issued 4 check-sat command(s) [2020-07-19 23:51:05,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:05,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-19 23:51:05,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-19 23:51:05,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359589667] [2020-07-19 23:51:05,306 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:05,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267900562] [2020-07-19 23:51:05,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:51:05,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-19 23:51:05,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135854152] [2020-07-19 23:51:05,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 23:51:05,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:05,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 23:51:05,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:51:05,309 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 9 states. [2020-07-19 23:51:16,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:16,145 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-07-19 23:51:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 23:51:16,145 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-07-19 23:51:16,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:16,147 INFO L225 Difference]: With dead ends: 39 [2020-07-19 23:51:16,147 INFO L226 Difference]: Without dead ends: 37 [2020-07-19 23:51:16,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-07-19 23:51:16,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-19 23:51:16,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-07-19 23:51:16,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-19 23:51:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-07-19 23:51:16,159 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2020-07-19 23:51:16,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:16,160 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-07-19 23:51:16,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 23:51:16,160 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-07-19 23:51:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-19 23:51:16,161 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:16,162 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:16,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:16,363 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:16,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:16,363 INFO L82 PathProgramCache]: Analyzing trace with hash -854689591, now seen corresponding path program 1 times [2020-07-19 23:51:16,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:16,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126169777] [2020-07-19 23:51:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68de0d1c [2020-07-19 23:51:16,371 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:16,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8952403] [2020-07-19 23:51:16,372 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@339944b3 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 [2020-07-19 23:51:16,475 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@339944b3 issued 4 check-sat command(s) [2020-07-19 23:51:16,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:16,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-19 23:51:16,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:16,526 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:51:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-19 23:51:16,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126169777] [2020-07-19 23:51:16,575 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:16,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8952403] [2020-07-19 23:51:16,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:51:16,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-19 23:51:16,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517579979] [2020-07-19 23:51:16,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 23:51:16,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:16,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 23:51:16,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-19 23:51:16,577 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 7 states. [2020-07-19 23:51:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:18,887 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-07-19 23:51:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 23:51:18,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-07-19 23:51:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:18,891 INFO L225 Difference]: With dead ends: 41 [2020-07-19 23:51:18,891 INFO L226 Difference]: Without dead ends: 34 [2020-07-19 23:51:18,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:51:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-19 23:51:18,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-07-19 23:51:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-19 23:51:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-07-19 23:51:18,901 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 30 [2020-07-19 23:51:18,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:18,902 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-07-19 23:51:18,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 23:51:18,902 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-07-19 23:51:18,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-19 23:51:18,903 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:18,903 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:19,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:19,119 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:19,120 INFO L82 PathProgramCache]: Analyzing trace with hash -695576914, now seen corresponding path program 3 times [2020-07-19 23:51:19,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:19,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946364110] [2020-07-19 23:51:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68de0d1c [2020-07-19 23:51:19,128 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:19,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842653009] [2020-07-19 23:51:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60fe2b7a 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