/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 09:14:00,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 09:14:00,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 09:14:00,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 09:14:00,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 09:14:00,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 09:14:00,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 09:14:00,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 09:14:00,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 09:14:00,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 09:14:00,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 09:14:00,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 09:14:00,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 09:14:00,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 09:14:00,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 09:14:00,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 09:14:00,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 09:14:00,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 09:14:00,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 09:14:00,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 09:14:00,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 09:14:00,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 09:14:00,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 09:14:00,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 09:14:00,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 09:14:00,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 09:14:00,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 09:14:00,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 09:14:00,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 09:14:00,668 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 09:14:00,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 09:14:00,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 09:14:00,672 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 09:14:00,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 09:14:00,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 09:14:00,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 09:14:00,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 09:14:00,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 09:14:00,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 09:14:00,673 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 09:14:00,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 09:14:00,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 09:14:00,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 09:14:00,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 09:14:00,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 09:14:00,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 09:14:00,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 09:14:00,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 09:14:00,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 09:14:00,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 09:14:00,677 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 09:14:00,677 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 09:14:00,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 09:14:01,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 09:14:01,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 09:14:01,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 09:14:01,020 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 09:14:01,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c [2021-05-06 09:14:01,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f70cd5256/331a1b2b10cd4de6872e2a473cc0e9e8/FLAGc823eebf3 [2021-05-06 09:14:01,531 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 09:14:01,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c [2021-05-06 09:14:01,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f70cd5256/331a1b2b10cd4de6872e2a473cc0e9e8/FLAGc823eebf3 [2021-05-06 09:14:01,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f70cd5256/331a1b2b10cd4de6872e2a473cc0e9e8 [2021-05-06 09:14:01,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 09:14:01,560 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 09:14:01,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 09:14:01,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 09:14:01,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 09:14:01,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 09:14:01" (1/1) ... [2021-05-06 09:14:01,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a63fa13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:14:01, skipping insertion in model container [2021-05-06 09:14:01,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 09:14:01" (1/1) ... [2021-05-06 09:14:01,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 09:14:01,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 09:14:01,729 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c[526,539] [2021-05-06 09:14:01,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 09:14:01,751 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 09:14:01,800 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c[526,539] [2021-05-06 09:14:01,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 09:14:01,846 INFO L208 MainTranslator]: Completed translation [2021-05-06 09:14:01,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:14:01 WrapperNode [2021-05-06 09:14:01,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 09:14:01,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 09:14:01,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 09:14:01,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 09:14:01,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:14:01" (1/1) ... [2021-05-06 09:14:01,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:14:01" (1/1) ... [2021-05-06 09:14:01,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:14:01" (1/1) ... [2021-05-06 09:14:01,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:14:01" (1/1) ... [2021-05-06 09:14:01,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:14:01" (1/1) ... [2021-05-06 09:14:01,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:14:01" (1/1) ... [2021-05-06 09:14:01,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:14:01" (1/1) ... [2021-05-06 09:14:01,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 09:14:01,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 09:14:01,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 09:14:01,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 09:14:01,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:14:01" (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 [2021-05-06 09:14:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 09:14:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 09:14:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 09:14:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 09:14:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 09:14:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 09:14:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 09:14:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 09:14:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 09:14:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 09:14:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 09:14:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 09:14:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 09:14:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 09:14:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 09:14:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 09:14:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 09:14:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 09:14:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 09:14:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 09:14:02,213 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 09:14:02,214 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 09:14:02,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:14:02 BoogieIcfgContainer [2021-05-06 09:14:02,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 09:14:02,216 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 09:14:02,216 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 09:14:02,217 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 09:14:02,219 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:14:02" (1/1) ... [2021-05-06 09:14:02,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 09:14:02 BasicIcfg [2021-05-06 09:14:02,234 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 09:14:02,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 09:14:02,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 09:14:02,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 09:14:02,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 09:14:01" (1/4) ... [2021-05-06 09:14:02,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7003afa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 09:14:02, skipping insertion in model container [2021-05-06 09:14:02,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:14:01" (2/4) ... [2021-05-06 09:14:02,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7003afa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 09:14:02, skipping insertion in model container [2021-05-06 09:14:02,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:14:02" (3/4) ... [2021-05-06 09:14:02,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7003afa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 09:14:02, skipping insertion in model container [2021-05-06 09:14:02,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 09:14:02" (4/4) ... [2021-05-06 09:14:02,240 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound100.cJordan [2021-05-06 09:14:02,245 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 09:14:02,248 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 09:14:02,263 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 09:14:02,296 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 09:14:02,297 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 09:14:02,297 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 09:14:02,297 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 09:14:02,297 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 09:14:02,297 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 09:14:02,297 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 09:14:02,297 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 09:14:02,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 09:14:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 09:14:02,331 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:02,332 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:02,332 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:02,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:02,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1625753047, now seen corresponding path program 1 times [2021-05-06 09:14:02,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:02,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400594026] [2021-05-06 09:14:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:02,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 09:14:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:02,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 09:14:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 09:14:02,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:02,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400594026] [2021-05-06 09:14:02,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400594026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:14:02,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:14:02,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 09:14:02,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601231409] [2021-05-06 09:14:02,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 09:14:02,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:02,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 09:14:02,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 09:14:02,663 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 09:14:02,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:02,756 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-05-06 09:14:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 09:14:02,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-06 09:14:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:02,764 INFO L225 Difference]: With dead ends: 35 [2021-05-06 09:14:02,764 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 09:14:02,765 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 09:14:02,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 09:14:02,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-06 09:14:02,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 09:14:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-05-06 09:14:02,794 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17 [2021-05-06 09:14:02,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:02,795 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-05-06 09:14:02,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 09:14:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-05-06 09:14:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 09:14:02,795 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:02,795 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:02,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 09:14:02,796 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:02,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:02,797 INFO L82 PathProgramCache]: Analyzing trace with hash 861759786, now seen corresponding path program 1 times [2021-05-06 09:14:02,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:02,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199982263] [2021-05-06 09:14:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:02,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 09:14:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:02,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 09:14:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 09:14:02,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:02,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199982263] [2021-05-06 09:14:02,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199982263] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:14:02,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:14:02,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 09:14:02,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913151544] [2021-05-06 09:14:02,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 09:14:02,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:02,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 09:14:02,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 09:14:02,984 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 09:14:03,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:03,263 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2021-05-06 09:14:03,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 09:14:03,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-06 09:14:03,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:03,265 INFO L225 Difference]: With dead ends: 41 [2021-05-06 09:14:03,265 INFO L226 Difference]: Without dead ends: 41 [2021-05-06 09:14:03,266 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 170.2ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 09:14:03,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-06 09:14:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2021-05-06 09:14:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 09:14:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-05-06 09:14:03,273 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 17 [2021-05-06 09:14:03,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:03,273 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-05-06 09:14:03,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 09:14:03,273 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-05-06 09:14:03,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 09:14:03,274 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:03,274 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:03,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 09:14:03,274 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:03,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:03,275 INFO L82 PathProgramCache]: Analyzing trace with hash 325569287, now seen corresponding path program 1 times [2021-05-06 09:14:03,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:03,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783041041] [2021-05-06 09:14:03,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 09:14:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:03,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 09:14:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:03,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-06 09:14:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 09:14:03,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:03,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783041041] [2021-05-06 09:14:03,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783041041] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:14:03,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:14:03,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 09:14:03,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437866607] [2021-05-06 09:14:03,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 09:14:03,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:03,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 09:14:03,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 09:14:03,392 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 09:14:03,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:03,679 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-05-06 09:14:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 09:14:03,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-05-06 09:14:03,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:03,683 INFO L225 Difference]: With dead ends: 45 [2021-05-06 09:14:03,683 INFO L226 Difference]: Without dead ends: 45 [2021-05-06 09:14:03,684 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 155.5ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 09:14:03,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-06 09:14:03,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2021-05-06 09:14:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 09:14:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2021-05-06 09:14:03,699 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 22 [2021-05-06 09:14:03,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:03,699 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2021-05-06 09:14:03,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 09:14:03,700 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2021-05-06 09:14:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-06 09:14:03,701 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:03,701 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:03,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 09:14:03,702 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:03,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1461652409, now seen corresponding path program 1 times [2021-05-06 09:14:03,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:03,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152464719] [2021-05-06 09:14:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:03,732 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:03,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174784061] [2021-05-06 09:14:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-06 09:14:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:03,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 09:14:03,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:03,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:14:04,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:04,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152464719] [2021-05-06 09:14:04,001 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:04,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174784061] [2021-05-06 09:14:04,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174784061] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:14:04,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:14:04,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 09:14:04,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392266007] [2021-05-06 09:14:04,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 09:14:04,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:04,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 09:14:04,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 09:14:04,003 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 09:14:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:04,073 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2021-05-06 09:14:04,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 09:14:04,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2021-05-06 09:14:04,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:04,090 INFO L225 Difference]: With dead ends: 53 [2021-05-06 09:14:04,090 INFO L226 Difference]: Without dead ends: 52 [2021-05-06 09:14:04,090 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 09:14:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-06 09:14:04,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-05-06 09:14:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 09:14:04,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2021-05-06 09:14:04,096 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 27 [2021-05-06 09:14:04,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:04,096 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2021-05-06 09:14:04,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 09:14:04,097 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2021-05-06 09:14:04,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-06 09:14:04,097 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:04,097 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:04,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:04,299 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:04,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:04,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1008917278, now seen corresponding path program 1 times [2021-05-06 09:14:04,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:04,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155123904] [2021-05-06 09:14:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:04,308 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:04,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331563407] [2021-05-06 09:14:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-06 09:14:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:04,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 09:14:04,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:04,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 09:14:04,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:04,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155123904] [2021-05-06 09:14:04,556 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:04,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331563407] [2021-05-06 09:14:04,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331563407] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:14:04,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:14:04,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 09:14:04,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188796112] [2021-05-06 09:14:04,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 09:14:04,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:04,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 09:14:04,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 09:14:04,558 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 09:14:04,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:04,621 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2021-05-06 09:14:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 09:14:04,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2021-05-06 09:14:04,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:04,623 INFO L225 Difference]: With dead ends: 63 [2021-05-06 09:14:04,623 INFO L226 Difference]: Without dead ends: 58 [2021-05-06 09:14:04,624 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 09:14:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-06 09:14:04,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-05-06 09:14:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 09:14:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-05-06 09:14:04,642 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 34 [2021-05-06 09:14:04,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:04,643 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-05-06 09:14:04,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 09:14:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-05-06 09:14:04,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-06 09:14:04,646 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:04,646 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:04,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:04,865 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:04,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:04,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1762200840, now seen corresponding path program 1 times [2021-05-06 09:14:04,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:04,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510184232] [2021-05-06 09:14:04,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:04,875 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:04,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473902756] [2021-05-06 09:14:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-06 09:14:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:04,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 09:14:04,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:05,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-06 09:14:05,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:05,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510184232] [2021-05-06 09:14:05,118 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:05,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473902756] [2021-05-06 09:14:05,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473902756] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:05,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:05,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 09:14:05,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208335093] [2021-05-06 09:14:05,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 09:14:05,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:05,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 09:14:05,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 09:14:05,120 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-06 09:14:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:05,213 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2021-05-06 09:14:05,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 09:14:05,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 44 [2021-05-06 09:14:05,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:05,216 INFO L225 Difference]: With dead ends: 82 [2021-05-06 09:14:05,216 INFO L226 Difference]: Without dead ends: 76 [2021-05-06 09:14:05,216 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.1ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 09:14:05,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-06 09:14:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-05-06 09:14:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 46 states have internal predecessors, (50), 24 states have call successors, (24), 9 states have call predecessors, (24), 8 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-06 09:14:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2021-05-06 09:14:05,223 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 44 [2021-05-06 09:14:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:05,223 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2021-05-06 09:14:05,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-06 09:14:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2021-05-06 09:14:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-06 09:14:05,224 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:05,225 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:05,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:05,441 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:05,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1665528729, now seen corresponding path program 2 times [2021-05-06 09:14:05,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:05,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655161471] [2021-05-06 09:14:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:05,455 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:05,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668385093] [2021-05-06 09:14:05,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2021-05-06 09:14:05,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:14:05,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:14:05,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-06 09:14:05,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:05,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-05-06 09:14:05,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:05,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655161471] [2021-05-06 09:14:05,700 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:05,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668385093] [2021-05-06 09:14:05,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668385093] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:05,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:05,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 09:14:05,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485765408] [2021-05-06 09:14:05,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 09:14:05,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:05,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 09:14:05,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-06 09:14:05,702 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-06 09:14:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:05,867 INFO L93 Difference]: Finished difference Result 111 states and 148 transitions. [2021-05-06 09:14:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 09:14:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 61 [2021-05-06 09:14:05,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:05,871 INFO L225 Difference]: With dead ends: 111 [2021-05-06 09:14:05,871 INFO L226 Difference]: Without dead ends: 105 [2021-05-06 09:14:05,873 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.0ms TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:14:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-05-06 09:14:05,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2021-05-06 09:14:05,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 62 states have internal predecessors, (68), 35 states have call successors, (35), 10 states have call predecessors, (35), 9 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 09:14:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 135 transitions. [2021-05-06 09:14:05,893 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 135 transitions. Word has length 61 [2021-05-06 09:14:05,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:05,894 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 135 transitions. [2021-05-06 09:14:05,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-06 09:14:05,895 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 135 transitions. [2021-05-06 09:14:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-06 09:14:05,897 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:05,898 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:06,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:06,117 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:06,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1382136022, now seen corresponding path program 1 times [2021-05-06 09:14:06,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:06,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173046115] [2021-05-06 09:14:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:06,125 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:06,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251939914] [2021-05-06 09:14:06,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-06 09:14:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:06,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 09:14:06,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:06,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-05-06 09:14:06,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:06,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173046115] [2021-05-06 09:14:06,407 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:06,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251939914] [2021-05-06 09:14:06,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251939914] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:06,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:06,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 09:14:06,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116654114] [2021-05-06 09:14:06,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 09:14:06,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:06,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 09:14:06,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-06 09:14:06,409 INFO L87 Difference]: Start difference. First operand 103 states and 135 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-05-06 09:14:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:06,518 INFO L93 Difference]: Finished difference Result 125 states and 152 transitions. [2021-05-06 09:14:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 09:14:06,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 64 [2021-05-06 09:14:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:06,526 INFO L225 Difference]: With dead ends: 125 [2021-05-06 09:14:06,526 INFO L226 Difference]: Without dead ends: 125 [2021-05-06 09:14:06,527 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:14:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-06 09:14:06,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-05-06 09:14:06,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 77 states have internal predecessors, (83), 35 states have call successors, (35), 15 states have call predecessors, (35), 14 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 09:14:06,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 150 transitions. [2021-05-06 09:14:06,535 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 150 transitions. Word has length 64 [2021-05-06 09:14:06,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:06,535 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 150 transitions. [2021-05-06 09:14:06,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-05-06 09:14:06,535 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 150 transitions. [2021-05-06 09:14:06,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-06 09:14:06,536 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:06,537 INFO L523 BasicCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:06,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:06,758 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:06,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:06,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1085940318, now seen corresponding path program 1 times [2021-05-06 09:14:06,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:06,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973498542] [2021-05-06 09:14:06,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:06,764 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:06,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970659108] [2021-05-06 09:14:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-06 09:14:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:06,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 09:14:06,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:07,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-05-06 09:14:07,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:07,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973498542] [2021-05-06 09:14:07,065 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:07,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970659108] [2021-05-06 09:14:07,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970659108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:07,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:07,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 09:14:07,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732870756] [2021-05-06 09:14:07,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 09:14:07,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:07,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 09:14:07,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:14:07,066 INFO L87 Difference]: Start difference. First operand 123 states and 150 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-05-06 09:14:07,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:07,183 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2021-05-06 09:14:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 09:14:07,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2021-05-06 09:14:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:07,184 INFO L225 Difference]: With dead ends: 129 [2021-05-06 09:14:07,185 INFO L226 Difference]: Without dead ends: 103 [2021-05-06 09:14:07,185 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-06 09:14:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-06 09:14:07,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-05-06 09:14:07,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.15) internal successors, (69), 63 states have internal predecessors, (69), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-06 09:14:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2021-05-06 09:14:07,191 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 128 transitions. Word has length 75 [2021-05-06 09:14:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:07,191 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 128 transitions. [2021-05-06 09:14:07,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-05-06 09:14:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2021-05-06 09:14:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-06 09:14:07,192 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:07,192 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:07,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:07,402 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:07,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:07,402 INFO L82 PathProgramCache]: Analyzing trace with hash -273867048, now seen corresponding path program 3 times [2021-05-06 09:14:07,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:07,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821177236] [2021-05-06 09:14:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:07,410 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:07,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599042444] [2021-05-06 09:14:07,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2021-05-06 09:14:07,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-06 09:14:07,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:14:07,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-06 09:14:07,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:07,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:07,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:07,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-05-06 09:14:07,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:07,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821177236] [2021-05-06 09:14:07,672 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:07,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599042444] [2021-05-06 09:14:07,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599042444] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:07,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:07,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 09:14:07,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083703128] [2021-05-06 09:14:07,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 09:14:07,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:07,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 09:14:07,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-06 09:14:07,674 INFO L87 Difference]: Start difference. First operand 103 states and 128 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-06 09:14:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:07,788 INFO L93 Difference]: Finished difference Result 111 states and 137 transitions. [2021-05-06 09:14:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 09:14:07,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 78 [2021-05-06 09:14:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:07,789 INFO L225 Difference]: With dead ends: 111 [2021-05-06 09:14:07,789 INFO L226 Difference]: Without dead ends: 111 [2021-05-06 09:14:07,789 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-05-06 09:14:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-06 09:14:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-05-06 09:14:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 68 states have internal predecessors, (74), 33 states have call successors, (33), 13 states have call predecessors, (33), 12 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 09:14:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2021-05-06 09:14:07,795 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 137 transitions. Word has length 78 [2021-05-06 09:14:07,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:07,795 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 137 transitions. [2021-05-06 09:14:07,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-06 09:14:07,795 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 137 transitions. [2021-05-06 09:14:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-06 09:14:07,796 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:07,797 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:08,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-06 09:14:08,005 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:08,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:08,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1708305639, now seen corresponding path program 2 times [2021-05-06 09:14:08,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:08,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734482312] [2021-05-06 09:14:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:08,013 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:08,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284022046] [2021-05-06 09:14:08,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:08,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:14:08,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:14:08,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-06 09:14:08,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:08,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-05-06 09:14:08,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:08,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734482312] [2021-05-06 09:14:08,326 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:08,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284022046] [2021-05-06 09:14:08,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284022046] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:08,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:08,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 09:14:08,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658881226] [2021-05-06 09:14:08,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 09:14:08,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:08,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 09:14:08,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:14:08,328 INFO L87 Difference]: Start difference. First operand 111 states and 137 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-05-06 09:14:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:08,497 INFO L93 Difference]: Finished difference Result 136 states and 159 transitions. [2021-05-06 09:14:08,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 09:14:08,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 81 [2021-05-06 09:14:08,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:08,500 INFO L225 Difference]: With dead ends: 136 [2021-05-06 09:14:08,500 INFO L226 Difference]: Without dead ends: 136 [2021-05-06 09:14:08,500 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-06 09:14:08,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-06 09:14:08,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2021-05-06 09:14:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 85 states have internal predecessors, (90), 34 states have call successors, (34), 18 states have call predecessors, (34), 17 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 09:14:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 155 transitions. [2021-05-06 09:14:08,510 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 155 transitions. Word has length 81 [2021-05-06 09:14:08,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:08,512 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 155 transitions. [2021-05-06 09:14:08,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-05-06 09:14:08,513 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2021-05-06 09:14:08,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-06 09:14:08,514 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:08,514 INFO L523 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:08,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-06 09:14:08,721 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:08,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:08,721 INFO L82 PathProgramCache]: Analyzing trace with hash -233495842, now seen corresponding path program 3 times [2021-05-06 09:14:08,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:08,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383580636] [2021-05-06 09:14:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:08,729 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:08,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547210913] [2021-05-06 09:14:08,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:08,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 09:14:08,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:14:08,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 09:14:08,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:09,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-05-06 09:14:09,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:09,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383580636] [2021-05-06 09:14:09,071 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:09,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547210913] [2021-05-06 09:14:09,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547210913] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:09,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:09,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-06 09:14:09,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299781008] [2021-05-06 09:14:09,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 09:14:09,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:09,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 09:14:09,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-06 09:14:09,073 INFO L87 Difference]: Start difference. First operand 133 states and 155 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-06 09:14:09,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:09,287 INFO L93 Difference]: Finished difference Result 149 states and 172 transitions. [2021-05-06 09:14:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 09:14:09,287 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 94 [2021-05-06 09:14:09,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:09,288 INFO L225 Difference]: With dead ends: 149 [2021-05-06 09:14:09,288 INFO L226 Difference]: Without dead ends: 144 [2021-05-06 09:14:09,289 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-05-06 09:14:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-06 09:14:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2021-05-06 09:14:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 87 states have (on average 1.0919540229885059) internal successors, (95), 91 states have internal predecessors, (95), 34 states have call successors, (34), 20 states have call predecessors, (34), 19 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 09:14:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 160 transitions. [2021-05-06 09:14:09,295 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 160 transitions. Word has length 94 [2021-05-06 09:14:09,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:09,295 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 160 transitions. [2021-05-06 09:14:09,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-06 09:14:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 160 transitions. [2021-05-06 09:14:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-06 09:14:09,296 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:09,297 INFO L523 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:09,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:09,521 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:09,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1077967713, now seen corresponding path program 1 times [2021-05-06 09:14:09,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:09,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489144039] [2021-05-06 09:14:09,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:09,528 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:09,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062019304] [2021-05-06 09:14:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:14:09,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 09:14:09,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:09,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-05-06 09:14:09,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:09,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489144039] [2021-05-06 09:14:09,883 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:09,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062019304] [2021-05-06 09:14:09,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062019304] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:14:09,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:14:09,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 09:14:09,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469465107] [2021-05-06 09:14:09,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 09:14:09,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:09,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 09:14:09,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 09:14:09,884 INFO L87 Difference]: Start difference. First operand 141 states and 160 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-06 09:14:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:09,969 INFO L93 Difference]: Finished difference Result 142 states and 161 transitions. [2021-05-06 09:14:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 09:14:09,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 94 [2021-05-06 09:14:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:09,971 INFO L225 Difference]: With dead ends: 142 [2021-05-06 09:14:09,971 INFO L226 Difference]: Without dead ends: 142 [2021-05-06 09:14:09,971 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 09:14:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-05-06 09:14:09,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 129. [2021-05-06 09:14:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 83 states have internal predecessors, (86), 28 states have call successors, (28), 20 states have call predecessors, (28), 19 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-06 09:14:09,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2021-05-06 09:14:09,976 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 94 [2021-05-06 09:14:09,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:09,976 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2021-05-06 09:14:09,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-06 09:14:09,976 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2021-05-06 09:14:09,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-05-06 09:14:09,977 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:09,977 INFO L523 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:10,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:10,193 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:10,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1181205258, now seen corresponding path program 4 times [2021-05-06 09:14:10,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:10,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477420099] [2021-05-06 09:14:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:10,200 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:10,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789775273] [2021-05-06 09:14:10,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:10,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:14:10,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:14:10,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 09:14:10,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:10,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-05-06 09:14:10,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:10,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477420099] [2021-05-06 09:14:10,512 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:10,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789775273] [2021-05-06 09:14:10,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789775273] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:10,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:10,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 09:14:10,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689285474] [2021-05-06 09:14:10,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 09:14:10,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:10,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 09:14:10,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-06 09:14:10,513 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2021-05-06 09:14:10,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:10,709 INFO L93 Difference]: Finished difference Result 166 states and 182 transitions. [2021-05-06 09:14:10,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 09:14:10,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 98 [2021-05-06 09:14:10,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:10,712 INFO L225 Difference]: With dead ends: 166 [2021-05-06 09:14:10,712 INFO L226 Difference]: Without dead ends: 166 [2021-05-06 09:14:10,712 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-05-06 09:14:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-05-06 09:14:10,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2021-05-06 09:14:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 104 states have (on average 1.0769230769230769) internal successors, (112), 106 states have internal predecessors, (112), 35 states have call successors, (35), 25 states have call predecessors, (35), 24 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 09:14:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 179 transitions. [2021-05-06 09:14:10,718 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 179 transitions. Word has length 98 [2021-05-06 09:14:10,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:10,718 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 179 transitions. [2021-05-06 09:14:10,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2021-05-06 09:14:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 179 transitions. [2021-05-06 09:14:10,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-06 09:14:10,719 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:10,720 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:10,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-06 09:14:10,934 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:10,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1771017874, now seen corresponding path program 2 times [2021-05-06 09:14:10,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:10,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287132523] [2021-05-06 09:14:10,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:10,941 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:10,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283526653] [2021-05-06 09:14:10,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:11,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 09:14:11,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:14:11,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-06 09:14:11,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:11,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-05-06 09:14:11,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:11,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287132523] [2021-05-06 09:14:11,275 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:11,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283526653] [2021-05-06 09:14:11,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283526653] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:11,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:11,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-06 09:14:11,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197956563] [2021-05-06 09:14:11,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 09:14:11,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:11,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 09:14:11,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-05-06 09:14:11,277 INFO L87 Difference]: Start difference. First operand 164 states and 179 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 7 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-05-06 09:14:11,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:11,450 INFO L93 Difference]: Finished difference Result 168 states and 182 transitions. [2021-05-06 09:14:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 09:14:11,451 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 7 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 105 [2021-05-06 09:14:11,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:11,451 INFO L225 Difference]: With dead ends: 168 [2021-05-06 09:14:11,452 INFO L226 Difference]: Without dead ends: 129 [2021-05-06 09:14:11,452 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-05-06 09:14:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-05-06 09:14:11,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-05-06 09:14:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 82 states have internal predecessors, (88), 28 states have call successors, (28), 20 states have call predecessors, (28), 19 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-06 09:14:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2021-05-06 09:14:11,456 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 105 [2021-05-06 09:14:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:11,456 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2021-05-06 09:14:11,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 7 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-05-06 09:14:11,456 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2021-05-06 09:14:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-06 09:14:11,457 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:11,457 INFO L523 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:11,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-06 09:14:11,682 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:11,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:11,682 INFO L82 PathProgramCache]: Analyzing trace with hash 348272066, now seen corresponding path program 3 times [2021-05-06 09:14:11,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:11,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205281290] [2021-05-06 09:14:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:11,689 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:11,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462680995] [2021-05-06 09:14:11,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:11,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 09:14:11,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:14:11,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 09:14:11,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:11,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:11,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:11,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:11,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 57 proven. 4 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 09:14:11,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:11,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205281290] [2021-05-06 09:14:11,921 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:11,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462680995] [2021-05-06 09:14:11,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462680995] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:11,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:11,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-05-06 09:14:11,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386565226] [2021-05-06 09:14:11,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 09:14:11,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:11,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 09:14:11,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-06 09:14:11,922 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-06 09:14:11,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:11,944 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2021-05-06 09:14:11,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 09:14:11,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 109 [2021-05-06 09:14:11,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:11,946 INFO L225 Difference]: With dead ends: 137 [2021-05-06 09:14:11,946 INFO L226 Difference]: Without dead ends: 137 [2021-05-06 09:14:11,946 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-06 09:14:11,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-06 09:14:11,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-05-06 09:14:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.0823529411764705) internal successors, (92), 86 states have internal predecessors, (92), 32 states have call successors, (32), 20 states have call predecessors, (32), 19 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 09:14:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 154 transitions. [2021-05-06 09:14:11,952 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 154 transitions. Word has length 109 [2021-05-06 09:14:11,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:11,953 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 154 transitions. [2021-05-06 09:14:11,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-06 09:14:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 154 transitions. [2021-05-06 09:14:11,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-06 09:14:11,954 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:11,954 INFO L523 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:12,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-06 09:14:12,180 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:12,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:12,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1079108237, now seen corresponding path program 5 times [2021-05-06 09:14:12,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:12,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895628046] [2021-05-06 09:14:12,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:12,187 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:12,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902254289] [2021-05-06 09:14:12,187 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:12,278 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-05-06 09:14:12,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:14:12,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-06 09:14:12,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:12,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 32 proven. 39 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2021-05-06 09:14:12,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:12,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895628046] [2021-05-06 09:14:12,714 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:12,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902254289] [2021-05-06 09:14:12,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902254289] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:12,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:12,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-06 09:14:12,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385114541] [2021-05-06 09:14:12,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 09:14:12,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:12,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 09:14:12,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-05-06 09:14:12,716 INFO L87 Difference]: Start difference. First operand 137 states and 154 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2021-05-06 09:14:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:12,970 INFO L93 Difference]: Finished difference Result 161 states and 183 transitions. [2021-05-06 09:14:12,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-06 09:14:12,972 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 111 [2021-05-06 09:14:12,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:12,973 INFO L225 Difference]: With dead ends: 161 [2021-05-06 09:14:12,973 INFO L226 Difference]: Without dead ends: 161 [2021-05-06 09:14:12,973 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 185.4ms TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-05-06 09:14:12,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-06 09:14:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 150. [2021-05-06 09:14:12,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 94 states have (on average 1.0851063829787233) internal successors, (102), 95 states have internal predecessors, (102), 34 states have call successors, (34), 22 states have call predecessors, (34), 21 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 09:14:12,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 168 transitions. [2021-05-06 09:14:12,976 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 168 transitions. Word has length 111 [2021-05-06 09:14:12,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:12,976 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 168 transitions. [2021-05-06 09:14:12,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2021-05-06 09:14:12,977 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 168 transitions. [2021-05-06 09:14:12,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-06 09:14:12,978 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:12,978 INFO L523 BasicCegarLoop]: trace histogram [18, 17, 17, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:13,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:13,193 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:13,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:13,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1546710215, now seen corresponding path program 6 times [2021-05-06 09:14:13,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:13,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508425067] [2021-05-06 09:14:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:13,208 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:13,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647424858] [2021-05-06 09:14:13,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:13,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-05-06 09:14:13,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:14:13,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 09:14:13,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:13,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:13,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 101 proven. 3 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2021-05-06 09:14:14,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:14:14,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508425067] [2021-05-06 09:14:14,012 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:14:14,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647424858] [2021-05-06 09:14:14,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647424858] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:14:14,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:14:14,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-06 09:14:14,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386598843] [2021-05-06 09:14:14,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 09:14:14,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:14:14,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 09:14:14,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-05-06 09:14:14,014 INFO L87 Difference]: Start difference. First operand 150 states and 168 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-05-06 09:14:14,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:14:14,192 INFO L93 Difference]: Finished difference Result 174 states and 198 transitions. [2021-05-06 09:14:14,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 09:14:14,193 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 115 [2021-05-06 09:14:14,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:14:14,194 INFO L225 Difference]: With dead ends: 174 [2021-05-06 09:14:14,194 INFO L226 Difference]: Without dead ends: 174 [2021-05-06 09:14:14,194 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 323.4ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-05-06 09:14:14,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-05-06 09:14:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 163. [2021-05-06 09:14:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 103 states have (on average 1.0970873786407767) internal successors, (113), 104 states have internal predecessors, (113), 36 states have call successors, (36), 24 states have call predecessors, (36), 23 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-06 09:14:14,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2021-05-06 09:14:14,200 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 115 [2021-05-06 09:14:14,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:14:14,200 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2021-05-06 09:14:14,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-05-06 09:14:14,200 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2021-05-06 09:14:14,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-06 09:14:14,202 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:14:14,202 INFO L523 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:14:14,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-06 09:14:14,421 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:14:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:14:14,421 INFO L82 PathProgramCache]: Analyzing trace with hash 394679903, now seen corresponding path program 4 times [2021-05-06 09:14:14,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:14:14,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334516078] [2021-05-06 09:14:14,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:14:14,427 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:14:14,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109110686] [2021-05-06 09:14:14,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:14:14,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 09:14:14,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 09:14:14,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 09:14:14,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:14:14,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:14,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:15,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:16,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:17,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:17,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:17,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:17,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:17,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:17,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:14:17,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:16:05,352 WARN L205 SmtUtils]: Spent 1.79 m on a formula simplification. DAG size of input: 25308 DAG size of output: 24817 [2021-05-06 09:16:08,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:16:11,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:16:13,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:18:04,927 WARN L205 SmtUtils]: Spent 1.86 m on a formula simplification. DAG size of input: 25362 DAG size of output: 24864